8537564 has 36 divisors (see below), whose sum is σ = 17801784. Its totient is φ = 3570336.

The previous prime is 8537563. The next prime is 8537603. The reversal of 8537564 is 4657358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8537561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7922 + ... + 8934.

It is an arithmetic number, because the mean of its divisors is an integer number (494494).

Almost surely, 2^8537564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8537564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8900892).

8537564 is an abundant number, since it is smaller than the sum of its proper divisors (9264220).

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

8537564 is a wasteful number, since it uses less digits than its factorization.

8537564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1065 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 8537564 is about 2921.9110184946. The cubic root of 8537564 is about 204.3829472231.

The spelling of 8537564 in words is "eight million, five hundred thirty-seven thousand, five hundred sixty-four".