8865564 has 12 divisors (see below), whose sum is σ = 20686344. Its totient is φ = 2955184.

The previous prime is 8865499. The next prime is 8865581. The reversal of 8865564 is 4655688.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 369387 + ... + 369410.

It is an arithmetic number, because the mean of its divisors is an integer number (1723862).

Almost surely, 2^8865564 is an apocalyptic number.

It is an amenable number.

8865564 is an abundant number, since it is smaller than the sum of its proper divisors (11820780).

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

8865564 is a wasteful number, since it uses less digits than its factorization.

8865564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738804 (or 738802 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 8865564 is about 2977.5096977172. The cubic root of 8865564 is about 206.9674853829.

The spelling of 8865564 in words is "eight million, eight hundred sixty-five thousand, five hundred sixty-four".