680860 has 24 divisors (see below), whose sum is σ = 1456560. Its totient is φ = 267264.

The previous prime is 680857. The next prime is 680861. The reversal of 680860 is 68086.

680860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892 + ... + 1468.

It is an arithmetic number, because the mean of its divisors is an integer number (60690).

2⁶⁸⁰⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

680860 is an abundant number, since it is smaller than the sum of its proper divisors (775700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680860 is a wasteful number, since it uses less digits than its factorization.

680860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 680860 is about 825.1424119508. The cubic root of 680860 is about 87.9736491350.

It can be divided in two parts, 680 and 860, that added together give a triangular number (1540 = T₅₅).

The spelling of 680860 in words is "six hundred eighty thousand, eight hundred sixty".