8993564 has 12 divisors (see below), whose sum is σ = 15886584. Its totient is φ = 4454544.

The previous prime is 8993563. The next prime is 8993573. The reversal of 8993564 is 4653998.

It is a d-powerful number, because it can be written as 8 + 9⁴ + 9⁴ + 3¹⁴ + 5⁵ + 6² + 4¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8993563) by changing a digit.

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, 10079 + ... + 10934.

It is an arithmetic number, because the mean of its divisors is an integer number (1323882).

Almost surely, 2^8993564 is an apocalyptic number.

It is an amenable number.

8993564 is a deficient number, since it is larger than the sum of its proper divisors (6893020).

8993564 is a wasteful number, since it uses less digits than its factorization.

8993564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21124 (or 21122 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 8993564 is about 2998.9271414958. The cubic root of 8993564 is about 207.9587874462.

The spelling of 8993564 in words is "eight million, nine hundred ninety-three thousand, five hundred sixty-four".