13664956 has 6 divisors (see below), whose sum is σ = 23913680. Its totient is φ = 6832476.

The previous prime is 13664953. The next prime is 13664969. The reversal of 13664956 is 65946631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13664953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1708116 + ... + 1708123.

Almost surely, 2^13664956 is an apocalyptic number.

It is an amenable number.

13664956 is a deficient number, since it is larger than the sum of its proper divisors (10248724).

13664956 is a wasteful number, since it uses less digits than its factorization.

13664956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416243 (or 3416241 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 13664956 is about 3696.6141264676. The cubic root of 13664956 is about 239.0760540623.

The spelling of 13664956 in words is "thirteen million, six hundred sixty-four thousand, nine hundred fifty-six".