686364 has 24 divisors (see below), whose sum is σ = 1830528. Its totient is φ = 196080.

The previous prime is 686363. The next prime is 686417. The reversal of 686364 is 463686.

686364 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 an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686364.

It is not an unprimeable number, because it can be changed into a prime (686363) 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, 4002 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (76272).

2⁶⁸⁶³⁶⁴ is an apocalyptic number.

It is an amenable number.

686364 is an abundant number, since it is smaller than the sum of its proper divisors (1144164).

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

686364 is a wasteful number, since it uses less digits than its factorization.

686364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8185 (or 8183 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 686364 is about 828.4708805987. The cubic root of 686364 is about 88.2100697570.

The spelling of 686364 in words is "six hundred eighty-six thousand, three hundred sixty-four".