Compare 666 vs 672
| Property | 666 | 672 | 
|---|---|---|
| Type | composite number | composite number | 
| Unique factors | 3 | 3 | 
| Total factors | 4 | 7 | 
| Prime factorization | 21 × 32 × 371 | 25 × 31 × 71 | 
| Prime factorization | 2 × 3 × 3 × 37 | 2 × 2 × 2 × 2 × 2 × 3 × 7 | 
| Divisors count | 12 | 24 | 
| Divisors | 1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666 | 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672 | 
| Number of properties | 0 | 0 | 
| Roman numberals | DCLXVI | DCLXXII | 
| Base 2 | 10100110102 | 10101000002 | 
| Base 3 | 2202003 | 2202203 | 
| Base 4 | 221224 | 222004 | 
| Base 5 | 101315 | 101425 | 
| Base 6 | 30306 | 30406 | 
| Base 7 | 16417 | 16507 | 
| Base 8 | 12328 | 12408 | 
| Base 9 | 8209 | 8269 | 
| Base 10 | 66610 | 67210 | 
| Base 11 | 55611 | 56111 | 
| Base 12 | 47612 | 48012 | 
| Base 13 | 3c313 | 3c913 | 
| Base 14 | 35814 | 36014 | 
| Base 15 | 2e615 | 2ec15 | 
| Base 16 | 29a16 | 2a016 |