8243564 has 36 divisors (see below), whose sum is σ = 16959096. Its totient is φ = 3495744.

The previous prime is 8243537. The next prime is 8243579. The reversal of 8243564 is 4653428.

It is a self number, because there is not a number n which added to its sum of digits gives 8243564.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26699 + ... + 27005.

It is an arithmetic number, because the mean of its divisors is an integer number (471086).

Almost surely, 2^8243564 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 8243564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8479548).

8243564 is an abundant number, since it is smaller than the sum of its proper divisors (8715532).

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

8243564 is a wasteful number, since it uses less digits than its factorization.

8243564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 453 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 8243564 is about 2871.1607408851. The cubic root of 8243564 is about 202.0094430772.

The spelling of 8243564 in words is "eight million, two hundred forty-three thousand, five hundred sixty-four".