13115679 has 16 divisors (see below), whose sum is σ = 17998848. Its totient is φ = 8491232.

The previous prime is 13115677. The next prime is 13115693. The reversal of 13115679 is 97651131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13115679 - 2¹ = 13115677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23269 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (1124928).

Almost surely, 2^13115679 is an apocalyptic number.

13115679 is a deficient number, since it is larger than the sum of its proper divisors (4883169).

13115679 is a wasteful number, since it uses less digits than its factorization.

13115679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its digits is 5670, while the sum is 33.

The square root of 13115679 is about 3621.5575378558. The cubic root of 13115679 is about 235.8288462675.

The spelling of 13115679 in words is "thirteen million, one hundred fifteen thousand, six hundred seventy-nine".