13657887 has 12 divisors (see below), whose sum is σ = 20364864. Its totient is φ = 8811360.

The previous prime is 13657873. The next prime is 13657907. The reversal of 13657887 is 78875631.

It is not a de Polignac number, because 13657887 - 2⁶ = 13657823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13657807) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24198 + ... + 24755.

It is an arithmetic number, because the mean of its divisors is an integer number (1697072).

Almost surely, 2^13657887 is an apocalyptic number.

13657887 is a deficient number, since it is larger than the sum of its proper divisors (6706977).

13657887 is a wasteful number, since it uses less digits than its factorization.

13657887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48990 (or 48987 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 13657887 is about 3695.6578575404. The cubic root of 13657887 is about 239.0348215809.

The spelling of 13657887 in words is "thirteen million, six hundred fifty-seven thousand, eight hundred eighty-seven".