The number 677 is an integer that follows 676 and precedes 678. It is an odd number and can be expressed as the sum of two prime numbers, specifically 337 and 340. In mathematics, it is classified as a composite number because it has divisors other than one and itself. In terms of its properties, 677 can be factored into 11 and 61, making it a product of two prime numbers. This number does not have any special significance in popular culture or history, but it can be used in various mathematical contexts, such as in number theory or coding systems.