Divisors of the Positive Integer 661
1, 661Sum of all the Divisors of 661, including itself
662Sum of the Proper Divisors of 661
1Properties of the number 661
The integer 661 is an odd number.The integer 661 is a Prime number.
1 is less than 661, so 661 is a deficient number.
The number 661 as a Roman Numeral
DCLXIThe number 661 in various Numeral Systems
| Base | Representation |
|---|---|
| 2: | 1010010101 |
| 3: | 220111 |
| 4: | 22111 |
| 5: | 10121 |
| 6: | 3021 |
| 7: | 1633 |
| 8: | 1225 |
| 9: | 814 |
| 10: | 661 |
| 11: | 551 |
| 12: | 471 |
| 13: | 3BB |
| 14: | 353 |
| 15: | 2E1 |
| 16: | 295 |
| 17: | 24F |
| 18: | 20D |
| 19: | 1FF |
| 20: | 1D1 |
| 21: | 1AA |
| 22: | 181 |
| 23: | 15H |
| 24: | 13D |
| 25: | 11B |
| 26: | PB |
| 27: | OD |
| 28: | NH |
| 29: | MN |
| 30: | M1 |
| 31: | LA |
| 32: | KL |
| 33: | K1 |
| 34: | JF |
| 35: | IV |
| 36: | ID |