Compare 660 vs 665
| Property | 660 | 665 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 4 | 3 |
| Total factors | 5 | 3 |
| Prime factorization | 22 × 31 × 51 × 111 | 51 × 71 × 191 |
| Prime factorization | 2 × 2 × 3 × 5 × 11 | 5 × 7 × 19 |
| Divisors count | 24 | 8 |
| Divisors | 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660 | 1, 5, 7, 19, 35, 95, 133, 665 |
| Number of properties | 0 | 0 |
| Roman numberals | DCLX | DCLXV |
| Base 2 | 10100101002 | 10100110012 |
| Base 3 | 2201103 | 2201223 |
| Base 4 | 221104 | 221214 |
| Base 5 | 101205 | 101305 |
| Base 6 | 30206 | 30256 |
| Base 7 | 16327 | 16407 |
| Base 8 | 12248 | 12318 |
| Base 9 | 8139 | 8189 |
| Base 10 | 66010 | 66510 |
| Base 11 | 55011 | 55511 |
| Base 12 | 47012 | 47512 |
| Base 13 | 3ba13 | 3c213 |
| Base 14 | 35214 | 35714 |
| Base 15 | 2e015 | 2e515 |
| Base 16 | 29416 | 29916 |