64640 is a six-digit number. In base 10, it is read as sixty-four thousand six hundred forty. It is an even number, divisible by 2, 4, 8, 10, 16, and other factors. Its prime factorization is 2^4 * 5 * 808. The number 64640 appears in various contexts. For instance, it can be a postal code or ZIP code in certain regions, though its specific geographical association would depend on the country or postal system in question. In some numbering systems, such as aircraft registration or product serial numbers, 64640 might be a unique identifier. It could also represent a quantity of items, a measurement, or a value in a dataset. The significance of 64640 is entirely dependent on the context in which it is used. Without additional information, it remains a purely mathematical entity.