8457564 has 12 divisors (see below), whose sum is σ = 19734344. Its totient is φ = 2819184.

The previous prime is 8457563. The next prime is 8457577. The reversal of 8457564 is 4657548.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352387 + ... + 352410.

Almost surely, 2^8457564 is an apocalyptic number.

It is an amenable number.

8457564 is an abundant number, since it is smaller than the sum of its proper divisors (11276780).

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

8457564 is a wasteful number, since it uses less digits than its factorization.

8457564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704804 (or 704802 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 8457564 is about 2908.1891272749. The cubic root of 8457564 is about 203.7425626151.

The spelling of 8457564 in words is "eight million, four hundred fifty-seven thousand, five hundred sixty-four".