odd, composite · 865th positive integer
The number 865
865 is an odd composite number. It is the 865th positive integer.
Quick reference
| Prime factorization | 5 × 173 |
| Divisors | 1, 5, 173, 865 |
| Binary | 1101100001 |
| Hexadecimal | 0x361 |
| Roman numeral | DCCCLXV |
| Digit sum | 19 |
| Properties | odd, composite |
Frequently asked
Is 865 a prime number?
No. 865 is composite. Its prime factorization is 5 × 173.
What are the factors of 865?
The factors (divisors) of 865 are 1, 5, 173, 865.
What is 865 in binary?
865 in binary is 1101100001. In hexadecimal it's 361.
What is 865 as a Roman numeral?
865 in Roman numerals is DCCCLXV.
What's the digit sum of 865?
Adding the digits of 865: 8 + 6 + 5 = 19.