13879664 has 20 divisors (see below), whose sum is σ = 27465504. Its totient is φ = 6791808.

The previous prime is 13879651. The next prime is 13879673. The reversal of 13879664 is 46697831.

13879664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8477 + ... + 9980.

Almost surely, 2^13879664 is an apocalyptic number.

It is an amenable number.

13879664 is a deficient number, since it is larger than the sum of its proper divisors (13585840).

13879664 is a wasteful number, since it uses less digits than its factorization.

13879664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512 (or 18506 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 13879664 is about 3725.5421082039. The cubic root of 13879664 is about 240.3216982297.

The spelling of 13879664 in words is "thirteen million, eight hundred seventy-nine thousand, six hundred sixty-four".