13641644 has 12 divisors (see below), whose sum is σ = 24096744. Its totient is φ = 6756864.

The previous prime is 13641637. The next prime is 13641671. The reversal of 13641644 is 44614631.

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 in 3 ways as a sum of consecutive naturals, for example, 15509 + ... + 16364.

It is an arithmetic number, because the mean of its divisors is an integer number (2008062).

Almost surely, 2^13641644 is an apocalyptic number.

It is an amenable number.

13641644 is a deficient number, since it is larger than the sum of its proper divisors (10455100).

13641644 is a wasteful number, since it uses less digits than its factorization.

13641644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31984 (or 31982 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 13641644 is about 3693.4596247962. The cubic root of 13641644 is about 238.9400245159.

The spelling of 13641644 in words is "thirteen million, six hundred forty-one thousand, six hundred forty-four".