7639

7639 is a natural number that follows 7638 and precedes 7640. In mathematics, it is a prime number, meaning its only positive divisors are 1 and itself. As a prime, 7639 cannot be factored into smaller natural numbers.

7639 is odd and congruent to 3 modulo 4, a property that implies it cannot be expressed as a sum of two squares. Its decimal representation is 7639, and the sum of its digits is 25, giving a digital root of 7; consequently it is not divisible by 3.

There are no widely known special uses attached to 7639 beyond its status as a four-digit prime. Like other such numbers, it may appear in numerical examples, enumeration tasks, or cataloging schemes where integer identifiers are used.

See also: 7638, 7640.