686755404 has 36 divisors (see below), whose sum is σ = 1739057320. Its totient is φ = 228510720.

The previous prime is 686755393. The next prime is 686755411. The reversal of 686755404 is 404557686.

686755404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 686755404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3852 + ... + 37260.

Almost surely, 2^686755404 is an apocalyptic number.

It is an amenable number.

686755404 is an abundant number, since it is smaller than the sum of its proper divisors (1052301916).

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

686755404 is a wasteful number, since it uses less digits than its factorization.

686755404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33990 (or 33985 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 686755404 is about 26206.0184690464. The cubic root of 686755404 is about 882.2683404597.

The spelling of 686755404 in words is "six hundred eighty-six million, seven hundred fifty-five thousand, four hundred four".