Compare 639 vs 646
| Property | 639 | 646 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 32 × 711 | 21 × 171 × 191 |
| Prime factorization | 3 × 3 × 71 | 2 × 17 × 19 |
| Divisors count | 6 | 8 |
| Divisors | 1, 3, 9, 71, 213, 639 | 1, 2, 17, 19, 34, 38, 323, 646 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXXXIX | DCXLVI |
| Base 2 | 10011111112 | 10100001102 |
| Base 3 | 2122003 | 2122213 |
| Base 4 | 213334 | 220124 |
| Base 5 | 100245 | 100415 |
| Base 6 | 25436 | 25546 |
| Base 7 | 16027 | 16127 |
| Base 8 | 11778 | 12068 |
| Base 9 | 7809 | 7879 |
| Base 10 | 63910 | 64610 |
| Base 11 | 53111 | 53811 |
| Base 12 | 45312 | 45a12 |
| Base 13 | 3a213 | 3a913 |
| Base 14 | 33914 | 34214 |
| Base 15 | 2c915 | 2d115 |
| Base 16 | 27f16 | 28616 |