While posting a nBAB for the number 670, MathBabbler noticed there wasn't a nBAB for the number

`.`

666MathBabbler Number Analyst (MBNA) output: ========================================= 666 is a natural, whole, integer 666 is even 666 proper divisors are: 1,2,3,6,9,18,37,74,111,222,333, 666 is abundant (sum of divisors is 816) 666 is unhappy 666 is a Harshad number 666 is not prime 666 has the prime factors: 2*3*3*37 666 sum prime factors: 2...3...3...37...answer: 45 666 is undulating 666 is palindromic 666 in octal is 01232 666 in hexadecimal is 0x29a 666 in binary is 1010011010 (is odious) 666 nearest square numbers: -41...10 (625 [25]...676 [26]) sqrt(666) = 25.807 ln(666) = 6.50129 log(666) = 2.82347 666 reciprocal is .00150150150150150150150150150150 666 is an apocalyptic power 666! is 1.01063e+1593 666 is 211.994 Pi years 666 is 33 score and 6 years 666 written as a Roman numeral is DCLXVI

`[Wikipedia]`

`is the sum of the first 36 natural numbers.`

666

`[Wikipedia]`

`is the sum of the squares of the first 7 prime numbers.`

666

`[Wikipedia]`

The Roman numeral representation of the number 666 (DCLXVI) uses once each the Roman numeral symbols with values under 1,000, occurring in descending order of their respective values (D = 500, C = 100, L = 50, X = 10, V = 5, I = 1).

`[Wikipedia]`

Hexakosioihexekontahexaphobia is the "fear of the number six hundred sixty-six."From "The Joy of Pi"... The first 144 digits of Pi add up to

`. [And 144 equals (6 + 6) * (6 + 6).]`

666## Update::2009.08.14

On 14 August 2009, MathBabbler posted his

`th tweet to Twitter.com.`

666

`is 2,665,338.`

666_{666}MathBabbler uses the

dc(reverse-polish) desk calculator which supports unlimited precision arithmetic.`is number that has 1908 digits and the pattern`

666^666`occurs twice.`

666## Update::2010.07.02

The

`th BARS was posted on 2 July 2010.`

666## Update::2014.08.22

nBAB#

`was posted on 22 August 2014. nBAB#`

666`was BAB# 4020 and it was a nBAB about the number 4020.`

666

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 10 April 2009

This work is licensed under a Creative Commons Attribution 3.0 United States License.