686732 has 12 divisors (see below), whose sum is σ = 1272600. Its totient is φ = 323136.

The previous prime is 686731. The next prime is 686737. The reversal of 686732 is 237686.

686732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

686732 is a modest number, since divided by 6732 gives 68 as remainder.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686732.

It is not an unprimeable number, because it can be changed into a prime (686731) 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, 4982 + ... + 5117.

It is an arithmetic number, because the mean of its divisors is an integer number (106050).

2⁶⁸⁶⁷³² is an apocalyptic number.

It is an amenable number.

686732 is a deficient number, since it is larger than the sum of its proper divisors (585868).

686732 is a wasteful number, since it uses less digits than its factorization.

686732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120 (or 10118 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 686732 is about 828.6929467541. The cubic root of 686732 is about 88.2258318045.

The spelling of 686732 in words is "six hundred eighty-six thousand, seven hundred thirty-two".