686370 has 32 divisors (see below), whose sum is σ = 1669248. Its totient is φ = 180608.

The previous prime is 686363. The next prime is 686417. The reversal of 686370 is 73686.

It is a super-2 number, since 2×686370² = 942207553800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686370.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027 + ... + 4193.

It is an arithmetic number, because the mean of its divisors is an integer number (52164).

2⁶⁸⁶³⁷⁰ is an apocalyptic number.

686370 is an abundant number, since it is smaller than the sum of its proper divisors (982878).

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

686370 is a wasteful number, since it uses less digits than its factorization.

686370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 686370 is about 828.4745017199. The cubic root of 686370 is about 88.2103267920.

The spelling of 686370 in words is "six hundred eighty-six thousand, three hundred seventy".