odd, composite · 689th positive integer
The number 689
689 is an odd composite number. It is the 689th positive integer.
Quick reference
| Prime factorization | 13 × 53 |
| Divisors | 1, 13, 53, 689 |
| Binary | 1010110001 |
| Hexadecimal | 0x2B1 |
| Roman numeral | DCLXXXIX |
| Digit sum | 23 |
| Properties | odd, composite |
Frequently asked
Is 689 a prime number?
No. 689 is composite. Its prime factorization is 13 × 53.
What are the factors of 689?
The factors (divisors) of 689 are 1, 13, 53, 689.
What is 689 in binary?
689 in binary is 1010110001. In hexadecimal it's 2B1.
What is 689 as a Roman numeral?
689 in Roman numerals is DCLXXXIX.
What's the digit sum of 689?
Adding the digits of 689: 6 + 8 + 9 = 23.