Numeric Value: 666

The folowing table expresses '666' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.

BaseDR10DR9DR8DR7DR6DR5DR4DR3DR2DR1
21010011010      101101
3    220200   202
4     22122  213
5     10131  112
6      3030 101
7      1641 156
8      1232 101
9       820112
10       666189
11       556156
12       476156
13       3C3156
14       358123
15       2E6178
16       29A156

Math World

Factors: 2 * 32 * 37

666 is the sum of the counting numbers from 1 to 36 (See 'The Sum/Product of the First N Counting Numbers').