13992687 has 12 divisors (see below), whose sum is σ = 20864064. Its totient is φ = 9027360.

The previous prime is 13992637. The next prime is 13992731. The reversal of 13992687 is 78629931.

It is not a de Polignac number, because 13992687 - 2⁸ = 13992431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13992637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24798 + ... + 25355.

It is an arithmetic number, because the mean of its divisors is an integer number (1738672).

Almost surely, 2^13992687 is an apocalyptic number.

13992687 is a deficient number, since it is larger than the sum of its proper divisors (6871377).

13992687 is a wasteful number, since it uses less digits than its factorization.

13992687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50190 (or 50187 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 13992687 is about 3740.6800183924. The cubic root of 13992687 is about 240.9722539409.

The spelling of 13992687 in words is "thirteen million, nine hundred ninety-two thousand, six hundred eighty-seven".