Compare 639 vs 648
| Property | 639 | 648 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 2 |
| Total factors | 3 | 7 |
| Prime factorization | 32 × 711 | 23 × 34 |
| Prime factorization | 3 × 3 × 71 | 2 × 2 × 2 × 3 × 3 × 3 × 3 |
| Divisors count | 6 | 20 |
| Divisors | 1, 3, 9, 71, 213, 639 | 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXXXIX | DCXLVIII |
| Base 2 | 10011111112 | 10100010002 |
| Base 3 | 2122003 | 2200003 |
| Base 4 | 213334 | 220204 |
| Base 5 | 100245 | 100435 |
| Base 6 | 25436 | 30006 |
| Base 7 | 16027 | 16147 |
| Base 8 | 11778 | 12108 |
| Base 9 | 7809 | 8009 |
| Base 10 | 63910 | 64810 |
| Base 11 | 53111 | 53a11 |
| Base 12 | 45312 | 46012 |
| Base 13 | 3a213 | 3ab13 |
| Base 14 | 33914 | 34414 |
| Base 15 | 2c915 | 2d315 |
| Base 16 | 27f16 | 28816 |