13663715 has 16 divisors (see below), whose sum is σ = 18230016. Its totient is φ = 9763200.

The previous prime is 13663703. The next prime is 13663721. The reversal of 13663715 is 51736631.

It is not a de Polignac number, because 13663715 - 2¹⁴ = 13647331 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376 + ... + 5405.

It is an arithmetic number, because the mean of its divisors is an integer number (1139376).

Almost surely, 2^13663715 is an apocalyptic number.

13663715 is a deficient number, since it is larger than the sum of its proper divisors (4566301).

13663715 is a wasteful number, since it uses less digits than its factorization.

13663715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830.

The product of its digits is 11340, while the sum is 32.

The square root of 13663715 is about 3696.4462663483. The cubic root of 13663715 is about 239.0688165133.

The spelling of 13663715 in words is "thirteen million, six hundred sixty-three thousand, seven hundred fifteen".