113661879 has 8 divisors (see below), whose sum is σ = 151600512. Its totient is φ = 75748920.

The previous prime is 113661871. The next prime is 113661887. The reversal of 113661879 is 978166311.

It is an interprime number because it is at equal distance from previous prime (113661871) and next prime (113661887).

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

It is not a de Polignac number, because 113661879 - 2³ = 113661871 is a prime.

It is a super-5 number, since 5×113661879⁵ (a number of 41 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113661879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113661871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9694 + ... + 17924.

It is an arithmetic number, because the mean of its divisors is an integer number (18950064).

Almost surely, 2^113661879 is an apocalyptic number.

113661879 is a deficient number, since it is larger than the sum of its proper divisors (37938633).

113661879 is an equidigital number, since it uses as much as digits as its factorization.

113661879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12837.

The product of its digits is 54432, while the sum is 42.

The square root of 113661879 is about 10661.2325272456. The cubic root of 113661879 is about 484.4009026675.

The spelling of 113661879 in words is "one hundred thirteen million, six hundred sixty-one thousand, eight hundred seventy-nine".