13431664 has 20 divisors (see below), whose sum is σ = 26194504. Its totient is φ = 6671808.

The previous prime is 13431661. The next prime is 13431667. The reversal of 13431664 is 46613431.

13431664 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (13431661) and next prime (13431667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162 + ... + 5185.

Almost surely, 2^13431664 is an apocalyptic number.

It is an amenable number.

13431664 is a deficient number, since it is larger than the sum of its proper divisors (12762840).

13431664 is a wasteful number, since it uses less digits than its factorization.

13431664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512 (or 5506 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 13431664 is about 3664.9234644123. The cubic root of 13431664 is about 237.7077126533.

The spelling of 13431664 in words is "thirteen million, four hundred thirty-one thousand, six hundred sixty-four".