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 often analyzed in various contexts, such as number theory and sequences. In terms of its properties, 677 is a prime number, meaning it has no divisors other than 1 and itself. This characteristic makes it significant in the study of prime numbers, which are the building blocks of number theory. Additionally, 677 can be represented in different numeral systems, such as binary (1010101011) and hexadecimal (2A5).