13165664 has 24 divisors (see below), whose sum is σ = 26004888. Its totient is φ = 6561280.

The previous prime is 13165661. The next prime is 13165679. The reversal of 13165664 is 46656131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 13165664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13165661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14504 + ... + 15384.

It is an arithmetic number, because the mean of its divisors is an integer number (1083537).

Almost surely, 2^13165664 is an apocalyptic number.

It is an amenable number.

13165664 is a deficient number, since it is larger than the sum of its proper divisors (12839224).

13165664 is an equidigital number, since it uses as much as digits as its factorization.

13165664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1350 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 13165664 is about 3628.4520115333. The cubic root of 13165664 is about 236.1280546067.

The spelling of 13165664 in words is "thirteen million, one hundred sixty-five thousand, six hundred sixty-four".