13580815 has 4 divisors (see below), whose sum is σ = 16296984. Its totient is φ = 10864648.

The previous prime is 13580783. The next prime is 13580869. The reversal of 13580815 is 51808531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13580815 - 2⁵ = 13580783 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358077 + ... + 1358086.

It is an arithmetic number, because the mean of its divisors is an integer number (4074246).

Almost surely, 2^13580815 is an apocalyptic number.

13580815 is a deficient number, since it is larger than the sum of its proper divisors (2716169).

13580815 is an equidigital number, since it uses as much as digits as its factorization.

13580815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716168.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 13580815 is about 3685.2157331695. The cubic root of 13580815 is about 238.5843454928.

The spelling of 13580815 in words is "thirteen million, five hundred eighty thousand, eight hundred fifteen".