64573564 has 12 divisors (see below), whose sum is σ = 123276888. Its totient is φ = 29351600.

The previous prime is 64573541. The next prime is 64573603. The reversal of 64573564 is 46537546.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733747 + ... + 733834.

It is an arithmetic number, because the mean of its divisors is an integer number (10273074).

Almost surely, 2^64573564 is an apocalyptic number.

It is an amenable number.

64573564 is a deficient number, since it is larger than the sum of its proper divisors (58703324).

64573564 is a wasteful number, since it uses less digits than its factorization.

64573564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467596 (or 1467594 counting only the distinct ones).

The product of its digits is 302400, while the sum is 40.

The square root of 64573564 is about 8035.7677915679. The cubic root of 64573564 is about 401.1913730527.

The spelling of 64573564 in words is "sixty-four million, five hundred seventy-three thousand, five hundred sixty-four".