113685891 has 8 divisors (see below), whose sum is σ = 165361344. Its totient is φ = 68900520.

The previous prime is 113685889. The next prime is 113685899. The reversal of 113685891 is 198586311.

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

It is not a de Polignac number, because 113685891 - 2¹ = 113685889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113685899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722481 + ... + 1722546.

It is an arithmetic number, because the mean of its divisors is an integer number (20670168).

Almost surely, 2^113685891 is an apocalyptic number.

113685891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113685891 is a deficient number, since it is larger than the sum of its proper divisors (51675453).

113685891 is a wasteful number, since it uses less digits than its factorization.

113685891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445041.

The product of its digits is 51840, while the sum is 42.

The square root of 113685891 is about 10662.3586039863. The cubic root of 113685891 is about 484.4350114810.

The spelling of 113685891 in words is "one hundred thirteen million, six hundred eighty-five thousand, eight hundred ninety-one".