Number 666 facts

The even number 666 is spelled 🔊, and written in words: six hundred and sixty-six. The ordinal number 666th is said 🔊 and written as: six hundred and sixty-sixth. The meaning of the number 666 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 666. What is 666 in computer science, numerology, codes and images, writing and naming in other languages. Other interesting facts, videos related to 666.

Interesting facts about the number 666


  • (666) Desdemona is asteroid number 666. It was discovered by A. Kopff from Heidelberg-Königstuhl Observatory on 7/23/1908.

Areas, mountains and surfaces

  • The total area of Selayar Island in the Selayar Islands is 666 km² and it is the 413th largest island in the world.

Distances between cities

  • There is a 666 miles (1,071 km) direct distance between Abidjan (Ivory Coast) and Benin City (Nigeria).
  • There is a 666 miles (1,071 km) direct distance between Abobo (Ivory Coast) and Freetown (Sierra Leone).
  • There is a 414 miles (666 km) direct distance between Belo Horizonte (Brazil) and Goiânia (Brazil).
  • There is a 666 miles (1,071 km) direct distance between Fukuoka-shi (Japan) and Sendai (Japan).
  • More distances between cities ...
  • There is a 666 miles (1,071 km) direct distance between Guatemala City (Guatemala) and Naucalpan de Juárez (Mexico).
  • There is a 666 miles (1,071 km) direct distance between Gwalior (India) and Peshawar (Pakistan).
  • There is a 414 miles (666 km) direct distance between Gwalior (India) and Vadodara (India).
  • There is a 666 miles (1,071 km) direct distance between Hangzhou (China) and Hong Kong (Hong Kong).
  • There is a 414 miles (666 km) direct distance between Houston (USA) and Monterrey (Mexico).
  • There is a 666 miles (1,071 km) direct distance between Kānpur (India) and Rājkot (India).
  • There is a 666 miles (1,071 km) direct distance between Kobe (Japan) and Sapporo (Japan).
  • There is a 666 miles (1,071 km) direct distance between Manila (Philippines) and Shantou (China).
  • There is a 666 miles (1,071 km) direct distance between Santiago de los Caballeros (Dominican republic) and Valencia (Venezuela).
  • There is a 666 miles (1,071 km) direct distance between Shangyu (China) and Shenzhen (China).
  • There is a 666 miles (1,071 km) direct distance between Taipei (Taiwan) and Xinyang (China).


  • Pokémon Vivillon (Bibiyon, Viviyon) is a Pokémon number # 666 of the National Pokédex. Vivillon is a bug and flying Pokémon in the sixth generation. It is a Pokémon from the Bug Egg group. The indexes ontros of Vivillon are Kalos Center index 022 - Pokédex of the Central Zone.
  • The number 666 is the sum of the numbers on the roulette wheel.

History and politics

  • ISO 3166 country codes for Saint Pierre and Miquelon are PM, SPM, 666 and internet top-level domain is .pm
  • United Nations Security Council Resolution number 666, adopted 13 September 1990. Sanctions and humanitarian aid regarding Iraq. Resolution text.

In other fields

  • Dreaming about the number 666 means a warning of an imminent attack of negativity. It is not to be feared but it is good to be alert and apply all the knowledge learned.


  • 666 is the sum of all the numbers on a typical roulette wheel
  • 666 is the smallest number such that the product of its digits is 12 times the sum
  • 666 is the largest rep-digit triangular number.


  • Studio 666 (Official Trailer)


  • 666 is the number of the beast. It is obtained by gematria (assigning numerical value to letters) when applied to the written bible. This number generates a phobia that has its own name, hexakosioihexekontahexaphobia, which is sometimes abbreviated as trihexaphobia. The list of evil numbers.
  • The number 666 symbolizes the False Trinity in the Bible.
  • It represents the kingdom of man in opposition to God in the Bible.
  • Called Sorath or Surt, according to the Apocalypse it is the number that the Antichrist is engraved on some part of his body. The Apocalypse also says that the name of the Antichrist is made up of letters that, added in their numerical value, give the fateful result of 666.


  • US 666 is the "Devil's Highway" in the American Southwest and is considered unlucky.

What is 666 in other units

The decimal (Arabic) number 666 converted to a Roman number is DCLXVI. Roman and decimal number conversions.
The number 666 converted to a Mayan number is mayan number 666
Decimal and Mayan number conversions.

Weight conversion

666 kilograms (kg) = 1468.3 pounds (lbs)
666 pounds (lbs) = 302.1 kilograms (kg)

Length conversion

666 kilometers (km) equals to 413.833 miles (mi).
666 miles (mi) equals to 1072 kilometers (km).
666 meters (m) equals to 2186 feet (ft).
666 feet (ft) equals 202.999 meters (m).
666 centimeters (cm) equals to 262.2 inches (in).
666 inches (in) equals to 1691.6 centimeters (cm).

Temperature conversion

666° Fahrenheit (°F) equals to 352.2° Celsius (°C)
666° Celsius (°C) equals to 1230.8° Fahrenheit (°F)

Power conversion

666 Horsepower (hp) equals to 489.78 kilowatts (kW)
666 kilowatts (kW) equals to 905.63 horsepower (hp)

Time conversion

(hours, minutes, seconds, days, weeks)
666 seconds equals to 11 minutes, 6 seconds
666 minutes equals to 11 hours, 6 minutes

Codes and images of the number 666

Number 666 morse code: -.... -.... -....
Sign language for number 666:
Sign language for number 666 Sign language for number 666 Sign language for number 666
Number 666 in braille:
Number 666 in braille
Images of the number
Image (1) of the numberImage (2) of the number
Number 666 black image Number 666 red image
More images, other sizes, codes and colors ...

Number 666 infographic

Year 666 AD

The year 666 AD was at one time considered the date for the advent of the Antichrist.

Gregorian, Hebrew, Islamic, Persian and Buddhist Year (Calendar)

Gregorian year 666 is Buddhist year 1209.
Buddhist year 666 is Gregorian year 123 .
Gregorian year 666 is Islamic year 45 or 46.
Islamic year 666 is Gregorian year 1267 or 1268.
Gregorian year 666 is Persian year 44 or 45.
Persian year 666 is Gregorian 1287 or 1288.
Gregorian year 666 is Hebrew year 4426 or 4427.
Hebrew year 666 is Gregorian year 3094 a. C.
More about the year 666.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is the official calendar in Iran and Afghanistan.

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Advanced math operations

Is Prime?

The number 666 is not a prime number. The closest prime numbers are 661, 673.
The 666th prime number in order is 4973.

Factorization and factors (dividers)

The prime factors of 666 are 2 * 3 * 3 * 37
The factors of 666 are 1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666.
Total factors 12.
Sum of factors 1482 (816).

Prime factor tree


The second power of 6662 is 443.556.
The third power of 6663 is 295.408.296.


The square root √666 is 25,806976.
The cube root of 3666 is 8,732892.


The natural logarithm of No. ln 666 = loge 666 = 6,50129.
The logarithm to base 10 of No. log10 666 = 2,823474.
The Napierian logarithm of No. log1/e 666 = -6,50129.

Trigonometric functions

The cosine of 666 is 0,999844.
The sine of 666 is -0,017642.
The tangent of 666 is -0,017644.

Number 666 in Computer Science

Code typeCode value
Port 666/UDPDoom, First online FPS
(Miscellaneous HTML entities)
Unix timeUnix time 666 is equal to Thursday Jan. 1, 1970, 12:11:06 a.m. GMT
IPv4, IPv6Number 666 internet address in dotted format v4, v6 ::29a
666 Decimal = 1010011010 Binary
666 Decimal = 220200 Ternary
666 Decimal = 1232 Octal
666 Decimal = 29A Hexadecimal (0x29a hex)
666 BASE64NjY2
666 MD5fae0b27c451c728867a567e8c1bb4e53
666 SHA1cd3f0c85b158c08a2b113464991810cf2cdfc387
666 SHA224509eece82eb6910bebef9af9496092d3244b6c0d69ef3aaa4b12c565
666 SHA256c7e616822f366fb1b5e0756af498cc11d2c0862edcb32ca65882f622ff39de1b
666 SHA3842a77d73c055e5f9eb56eaddc478883b6ff802c072ef85e55c4f7b38f48515dc5b6f70e466a5c4b767eb1665c5c4499b8
More SHA codes related to the number 666 ...

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Numerology 666

The meaning of the number 6 (six), numerology 6

Character frequency 6: 3

The number 6 (six) denotes emotional responsibility, love, understanding and harmonic balance. The person with the personal number 6 must incorporate vision and acceptance in the world. Beauty, tenderness, stable, responsible and understanding exchange, the sense of protection and availability also define the meaning of the number 6 (six).
More about the the number 6 (six), numerology 6 ...

№ 666 in other languages

How to say or write the number six hundred and sixty-six in Spanish, German, French and other languages.
Spanish: 🔊 (número 666)

seiscientos sesenta y seis

German: 🔊 (Nummer 666)


French: 🔊 (nombre 666)

six cent soixante-six

Portuguese: 🔊 (número 666)

seiscentos e sessenta e seis

Hindi: 🔊 (संख्या 666)

छः सौ, छयासठ

Chinese: 🔊 (数 666)


Arabian: 🔊 (عدد 666)

ستمائة و ستة و ستون

Czech: 🔊 (číslo 666)

šestset šedesát šest

Korean: 🔊 (번호 666)


Danish: 🔊 (nummer 666)

sekshundrede og seksogtreds

Hebrew: (מספר 666)

שש מאות שישים ושש

Dutch: 🔊 (nummer 666)


Japanese: 🔊 (数 666)


Indonesian: 🔊 (jumlah 666)

enam ratus enam puluh enam

Italian: 🔊 (numero 666)


Norwegian: 🔊 (nummer 666)

seks hundre og sekstiseks

Polish: 🔊 (liczba 666)

sześćset sześćdziesiąt sześć

Russian: 🔊 (номер 666)

шестьсот шестьдесят шесть

Turkish: 🔊 (numara 666)


Thai: 🔊 (จำนวน 666)


Ukrainian: 🔊 (номер 666)

шістсот шістдесят шість

Vietnamese: 🔊 (con số 666)

sáu trăm sáu mươi sáu

Other languages ...

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Frequently asked questions about the number 666

  • How do you write the number 666 in words?

    666 can be written as "six hundred and sixty-six".

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