8918564 has 12 divisors (see below), whose sum is σ = 15759744. Its totient is φ = 4415784.

The previous prime is 8918561. The next prime is 8918597. The reversal of 8918564 is 4658198.

It is not an unprimeable number, because it can be changed into a prime (8918561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10412 + ... + 11235.

It is an arithmetic number, because the mean of its divisors is an integer number (1313312).

Almost surely, 2^8918564 is an apocalyptic number.

It is an amenable number.

8918564 is a deficient number, since it is larger than the sum of its proper divisors (6841180).

8918564 is a wasteful number, since it uses less digits than its factorization.

8918564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21754 (or 21752 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 8918564 is about 2986.3964907560. The cubic root of 8918564 is about 207.3790963546.

The spelling of 8918564 in words is "eight million, nine hundred eighteen thousand, five hundred sixty-four".