686589804 has 24 divisors (see below), whose sum is σ = 1780047920. Its totient is φ = 228863232.

The previous prime is 686589793. The next prime is 686589811. The reversal of 686589804 is 408985686.

It is a happy number.

686589804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3178549 + ... + 3178764.

Almost surely, 2^686589804 is an apocalyptic number.

It is an amenable number.

686589804 is an abundant number, since it is smaller than the sum of its proper divisors (1093458116).

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

686589804 is a wasteful number, since it uses less digits than its factorization.

686589804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357326 (or 6357318 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 686589804 is about 26202.8586990046. The cubic root of 686589804 is about 882.1974198274.

It can be divided in two parts, 6865 and 89804, that added together give a palindrome (96669).

The spelling of 686589804 in words is "six hundred eighty-six million, five hundred eighty-nine thousand, eight hundred four".