686914464 has 24 divisors (see below), whose sum is σ = 1803150720. Its totient is φ = 228971456.

The previous prime is 686914453. The next prime is 686914477. The reversal of 686914464 is 464419686.

It is a happy number.

686914464 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 (24).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3577584 + ... + 3577775.

It is an arithmetic number, because the mean of its divisors is an integer number (75131280).

Almost surely, 2^686914464 is an apocalyptic number.

It is an amenable number.

686914464 is an abundant number, since it is smaller than the sum of its proper divisors (1116236256).

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

686914464 is a wasteful number, since it uses less digits than its factorization.

686914464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155372 (or 7155364 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 686914464 is about 26209.0530923954. The cubic root of 686914464 is about 882.3364495072.

It can be divided in two parts, 686914 and 464, that added together give a triangular number (687378 = T₁₁₇₂).

The spelling of 686914464 in words is "six hundred eighty-six million, nine hundred fourteen thousand, four hundred sixty-four".