915664 has 20 divisors (see below), whose sum is σ = 1790560. Its totient is φ = 453600.

The previous prime is 915659. The next prime is 915683. The reversal of 915664 is 466519.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2227 + ... + 2605.

It is an arithmetic number, because the mean of its divisors is an integer number (89528).

2⁹¹⁵⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

915664 is a deficient number, since it is larger than the sum of its proper divisors (874896).

915664 is a wasteful number, since it uses less digits than its factorization.

915664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 532 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 915664 is about 956.9033389011. The cubic root of 915664 is about 97.1058468339.

The spelling of 915664 in words is "nine hundred fifteen thousand, six hundred sixty-four".