113645864 has 8 divisors (see below), whose sum is σ = 213086010. Its totient is φ = 56822928.

The previous prime is 113645849. The next prime is 113645899. The reversal of 113645864 is 468546311.

It can be written as a sum of positive squares in only one way, i.e., 113592964 + 52900 = 10658^2 + 230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×113645864³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7102859 + ... + 7102874.

Almost surely, 2^113645864 is an apocalyptic number.

It is an amenable number.

113645864 is a deficient number, since it is larger than the sum of its proper divisors (99440146).

113645864 is a wasteful number, since it uses less digits than its factorization.

113645864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14205739 (or 14205735 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 113645864 is about 10660.4814150206. The cubic root of 113645864 is about 484.3781508446.

The spelling of 113645864 in words is "one hundred thirteen million, six hundred forty-five thousand, eight hundred sixty-four".