13390687 has 12 divisors (see below), whose sum is σ = 14400120. Its totient is φ = 12416976.

The previous prime is 13390661. The next prime is 13390691. The reversal of 13390687 is 78609331.

It is a de Polignac number, because none of the positive numbers 2^k-13390687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13390607) 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, 85213 + ... + 85369.

It is an arithmetic number, because the mean of its divisors is an integer number (1200010).

Almost surely, 2^13390687 is an apocalyptic number.

13390687 is a deficient number, since it is larger than the sum of its proper divisors (1009433).

13390687 is an equidigital number, since it uses as much as digits as its factorization.

13390687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 13390687 is about 3659.3287635849. The cubic root of 13390687 is about 237.4657354077.

The spelling of 13390687 in words is "thirteen million, three hundred ninety thousand, six hundred eighty-seven".