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 |
Reading 689 in NumGrid context
For 689, the underlying data on this page comes from classical number theory plus NumGrid solver-derived puzzle statistics. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 689 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
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.