113688638 has 8 divisors (see below), whose sum is σ = 194894832. Its totient is φ = 48723696.

The previous prime is 113688623. The next prime is 113688643. The reversal of 113688638 is 836886311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4060295 + ... + 4060322.

It is an arithmetic number, because the mean of its divisors is an integer number (24361854).

Almost surely, 2^113688638 is an apocalyptic number.

113688638 is a deficient number, since it is larger than the sum of its proper divisors (81206194).

113688638 is an equidigital number, since it uses as much as digits as its factorization.

113688638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120626.

The product of its digits is 165888, while the sum is 44.

The square root of 113688638 is about 10662.4874208601. The cubic root of 113688638 is about 484.4389132617.

The spelling of 113688638 in words is "one hundred thirteen million, six hundred eighty-eight thousand, six hundred thirty-eight".