113646561 has 32 divisors (see below), whose sum is σ = 176563200. Its totient is φ = 63685440.

The previous prime is 113646557. The next prime is 113646571. The reversal of 113646561 is 165646311.

It is not a de Polignac number, because 113646561 - 2² = 113646557 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (113646521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299670 + ... + 300048.

It is an arithmetic number, because the mean of its divisors is an integer number (5517600).

Almost surely, 2^113646561 is an apocalyptic number.

It is an amenable number.

113646561 is a deficient number, since it is larger than the sum of its proper divisors (62916639).

113646561 is a wasteful number, since it uses less digits than its factorization.

113646561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629.

The product of its digits is 12960, while the sum is 33.

The square root of 113646561 is about 10660.5141058018. The cubic root of 113646561 is about 484.3791410870.

The spelling of 113646561 in words is "one hundred thirteen million, six hundred forty-six thousand, five hundred sixty-one".