64573504 has 28 divisors (see below), whose sum is σ = 130562604. Its totient is φ = 31675904.

The previous prime is 64573499. The next prime is 64573507. The reversal of 64573504 is 40537546.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17239104 + 47334400 = 4152^2 + 6880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64573504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64573507) 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, 6127 + ... + 12910.

Almost surely, 2^64573504 is an apocalyptic number.

64573504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64573504 is an abundant number, since it is smaller than the sum of its proper divisors (65989100).

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

64573504 is a wasteful number, since it uses less digits than its factorization.

64573504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19102 (or 19092 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 64573504 is about 8035.7640582586. The cubic root of 64573504 is about 401.1912487940.

The spelling of 64573504 in words is "sixty-four million, five hundred seventy-three thousand, five hundred four".