686329564 has 12 divisors (see below), whose sum is σ = 1216280800. Its totient is φ = 338820768.

The previous prime is 686329549. The next prime is 686329577. The reversal of 686329564 is 465923686.

686329564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085649 + ... + 1086280.

Almost surely, 2^686329564 is an apocalyptic number.

It is an amenable number.

686329564 is a deficient number, since it is larger than the sum of its proper divisors (529951236).

686329564 is a wasteful number, since it uses less digits than its factorization.

686329564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172012 (or 2172010 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 686329564 is about 26197.8923579741. The cubic root of 686329564 is about 882.0859451799.

The spelling of 686329564 in words is "six hundred eighty-six million, three hundred twenty-nine thousand, five hundred sixty-four".