680732 has 36 divisors (see below), whose sum is σ = 1383480. Its totient is φ = 292032.

The previous prime is 680707. The next prime is 680749. The reversal of 680732 is 237086.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680732.

It is an unprimeable number.

680732 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12818 + ... + 12870.

It is an arithmetic number, because the mean of its divisors is an integer number (38430).

2⁶⁸⁰⁷³² is an apocalyptic number.

It is an amenable number.

680732 is an abundant number, since it is smaller than the sum of its proper divisors (702748).

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

680732 is a wasteful number, since it uses less digits than its factorization.

680732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 680732 is about 825.0648459364. The cubic root of 680732 is about 87.9681358465.

The spelling of 680732 in words is "six hundred eighty thousand, seven hundred thirty-two".