What are sixteen or more numerical facts relevant to 666?

Answer 1

1 It's sixhundred and sixty-six in words

2 It's a composite even integer

3 It's a composite number because it has more than 2 factors

4 It's an even number because it's divisable by 2 with no remainder

5 It's an integer because it's a whole number without fractions or decimals

6 Its prime factorizition is 2*3*3*37 = 666

7 Its reciprocal is 1/666

8 It's 666.0 expressed as a decimal

9 It's 666/1 expressed as an improper fraction

10 It's 1332/2 expressed as an equivalent fraction

11 It's equal to 1 when raised to the power of 0

12 It's 66600% expressed as a percentage

13 Its digital sum is 9

14 It becomes 999 when rotated through 180 degrees

15 It means 6*6*6 when expressed as 63 and not 666

16 It is 22+32+52+72+112+132+172 or the first 7 prime numbers squared

17 It has a factor of 6 which is the first perfect number

18 Its square root is an irrational number

19 It's the equivalent of DCLXVI in Roman numerals

20 It's the devil's own contact number via the Biblical beast