even, composite, perfect square · 64th positive integer
The number 64
64 is an even composite number. It's known as the number of squares on a chessboard; a perfect cube (4³) and a perfect sixth power. It is the 64th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 |
| Divisors | 1, 2, 4, 8, 16, 32, 64 |
| Binary | 1000000 |
| Hexadecimal | 0x40 |
| Roman numeral | LXIV |
| Digit sum | 10 |
| Properties | even, composite, perfect square |
Why 64 is notable
The number of squares on a chessboard; a perfect cube (4³) and a perfect sixth power.
Reading 64 in NumGrid context
For 64, 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 64 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 64 a prime number?
No. 64 is composite. Its prime factorization is 2 × 2 × 2 × 2 × 2 × 2.
What are the factors of 64?
The factors (divisors) of 64 are 1, 2, 4, 8, 16, 32, 64.
What is 64 in binary?
64 in binary is 1000000. In hexadecimal it's 40.
What is 64 as a Roman numeral?
64 in Roman numerals is LXIV.
What's the digit sum of 64?
Adding the digits of 64: 6 + 4 = 10.