75664564 has 12 divisors (see below), whose sum is σ = 132529824. Its totient is φ = 37798904.

The previous prime is 75664531. The next prime is 75664571. The reversal of 75664564 is 46546657.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 75664564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2842 + ... + 12625.

It is an arithmetic number, because the mean of its divisors is an integer number (11044152).

Almost surely, 2^75664564 is an apocalyptic number.

It is an amenable number.

75664564 is a deficient number, since it is larger than the sum of its proper divisors (56865260).

75664564 is a wasteful number, since it uses less digits than its factorization.

75664564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16694 (or 16692 counting only the distinct ones).

The product of its digits is 604800, while the sum is 43.

The square root of 75664564 is about 8698.5380380843. The cubic root of 75664564 is about 422.9582605191.

The spelling of 75664564 in words is "seventy-five million, six hundred sixty-four thousand, five hundred sixty-four".