11715639 has 16 divisors (see below), whose sum is σ = 17063424. Its totient is φ = 7106400.

The previous prime is 11715631. The next prime is 11715661. The reversal of 11715639 is 93651711.

It is a happy number.

11715639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11715639 - 2³ = 11715631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11715631) 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, 654 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (1066464).

Almost surely, 2^11715639 is an apocalyptic number.

11715639 is a deficient number, since it is larger than the sum of its proper divisors (5347785).

11715639 is a wasteful number, since it uses less digits than its factorization.

11715639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318.

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

The square root of 11715639 is about 3422.8115636126. The cubic root of 11715639 is about 227.1199725485.

The spelling of 11715639 in words is "eleven million, seven hundred fifteen thousand, six hundred thirty-nine".