13155664 has 10 divisors (see below), whose sum is σ = 25489130. Its totient is φ = 6577824.

The previous prime is 13155641. The next prime is 13155673. The reversal of 13155664 is 46655131.

It can be written as a sum of positive squares in only one way, i.e., 11696400 + 1459264 = 3420^2 + 1208^2 .

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 as a sum of consecutive naturals, namely, 411099 + ... + 411130.

It is an arithmetic number, because the mean of its divisors is an integer number (2548913).

Almost surely, 2^13155664 is an apocalyptic number.

It is an amenable number.

13155664 is a deficient number, since it is larger than the sum of its proper divisors (12333466).

13155664 is an equidigital number, since it uses as much as digits as its factorization.

13155664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822237 (or 822231 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 13155664 is about 3627.0737516626. The cubic root of 13155664 is about 236.0682556571.

The spelling of 13155664 in words is "thirteen million, one hundred fifty-five thousand, six hundred sixty-four".