13679864 has 16 divisors (see below), whose sum is σ = 27981720. Its totient is φ = 6218080.

The previous prime is 13679833. The next prime is 13679873. The reversal of 13679864 is 46897631.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

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, 77639 + ... + 77814.

Almost surely, 2^13679864 is an apocalyptic number.

It is an amenable number.

13679864 is an abundant number, since it is smaller than the sum of its proper divisors (14301856).

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

13679864 is a wasteful number, since it uses less digits than its factorization.

13679864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155470 (or 155466 counting only the distinct ones).

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

The square root of 13679864 is about 3698.6300166413. The cubic root of 13679864 is about 239.1629637330.

The spelling of 13679864 in words is "thirteen million, six hundred seventy-nine thousand, eight hundred sixty-four".