13687315 has 12 divisors (see below), whose sum is σ = 17337024. Its totient is φ = 10372176.

The previous prime is 13687307. The next prime is 13687319. The reversal of 13687315 is 51378631.

It is not a de Polignac number, because 13687315 - 2³ = 13687307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13687319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1987 + ... + 5596.

It is an arithmetic number, because the mean of its divisors is an integer number (1444752).

Almost surely, 2^13687315 is an apocalyptic number.

13687315 is a deficient number, since it is larger than the sum of its proper divisors (3649709).

13687315 is an equidigital number, since it uses as much as digits as its factorization.

13687315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626 (or 7607 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 13687315 is about 3699.6371443697. The cubic root of 13687315 is about 239.2063774152.

The spelling of 13687315 in words is "thirteen million, six hundred eighty-seven thousand, three hundred fifteen".