13975644 has 24 divisors (see below), whose sum is σ = 32851728. Its totient is φ = 4624000.

The previous prime is 13975639. The next prime is 13975681. The reversal of 13975644 is 44657931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2607 + ... + 5894.

It is an arithmetic number, because the mean of its divisors is an integer number (1368822).

Almost surely, 2^13975644 is an apocalyptic number.

It is an amenable number.

13975644 is an abundant number, since it is smaller than the sum of its proper divisors (18876084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13975644 is a wasteful number, since it uses less digits than its factorization.

13975644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8645 (or 8643 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 13975644 is about 3738.4012625720. The cubic root of 13975644 is about 240.8743799909.

The spelling of 13975644 in words is "thirteen million, nine hundred seventy-five thousand, six hundred forty-four".