680677 has 4 divisors (see below), whose sum is σ = 690336. Its totient is φ = 671020.

The previous prime is 680657. The next prime is 680681. The reversal of 680677 is 776086.

680677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680677 - 2¹⁵ = 647909 is a prime.

It is a Duffinian number.

680677 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4723 + ... + 4864.

It is an arithmetic number, because the mean of its divisors is an integer number (172584).

2⁶⁸⁰⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

680677 is a deficient number, since it is larger than the sum of its proper divisors (9659).

680677 is an equidigital number, since it uses as much as digits as its factorization.

680677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9658.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 680677 is about 825.0315145496. The cubic root of 680677 is about 87.9657666431.

The spelling of 680677 in words is "six hundred eighty thousand, six hundred seventy-seven".