686308 has 24 divisors (see below), whose sum is σ = 1390592. Its totient is φ = 290304.

The previous prime is 686293. The next prime is 686317. The reversal of 686308 is 803686.

686308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 686308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3460 + ... + 3652.

2⁶⁸⁶³⁰⁸ is an apocalyptic number.

It is an amenable number.

686308 is an abundant number, since it is smaller than the sum of its proper divisors (704284).

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

686308 is a wasteful number, since it uses less digits than its factorization.

686308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 686308 is about 828.4370827045. The cubic root of 686308 is about 88.2076706907.

The spelling of 686308 in words is "six hundred eighty-six thousand, three hundred eight".