115689564 has 18 divisors (see below), whose sum is σ = 292437600. Its totient is φ = 38563176.

The previous prime is 115689557. The next prime is 115689571. The reversal of 115689564 is 465986511.

115689564 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 89 + 564 = 666.

It is an interprime number because it is at equal distance from previous prime (115689557) and next prime (115689571).

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 1606764 + ... + 1606835.

Almost surely, 2^115689564 is an apocalyptic number.

It is an amenable number.

115689564 is an abundant number, since it is smaller than the sum of its proper divisors (176748036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115689564 is a wasteful number, since it uses less digits than its factorization.

115689564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213609 (or 3213604 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 115689564 is about 10755.9083298436. The cubic root of 115689564 is about 487.2644510980.

The spelling of 115689564 in words is "one hundred fifteen million, six hundred eighty-nine thousand, five hundred sixty-four".