113665579 has 4 divisors (see below), whose sum is σ = 113709960. Its totient is φ = 113621200.

The previous prime is 113665523. The next prime is 113665603. The reversal of 113665579 is 975566311.

It is a happy number.

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 113665579 - 2²¹ = 111568427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113665679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18097 + ... + 23554.

It is an arithmetic number, because the mean of its divisors is an integer number (28427490).

Almost surely, 2^113665579 is an apocalyptic number.

113665579 is a deficient number, since it is larger than the sum of its proper divisors (44381).

113665579 is an equidigital number, since it uses as much as digits as its factorization.

113665579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44380.

The product of its digits is 170100, while the sum is 43.

The square root of 113665579 is about 10661.4060517363. The cubic root of 113665579 is about 484.4061587947.

It can be divided in two parts, 113665 and 579, that added together give a square (114244 = 338²).

The spelling of 113665579 in words is "one hundred thirteen million, six hundred sixty-five thousand, five hundred seventy-nine".