74500564 has 18 divisors (see below), whose sum is σ = 134724282. Its totient is φ = 36046800.

The previous prime is 74500523. The next prime is 74500589. The reversal of 74500564 is 46500547.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70056900 + 4443664 = 8370^2 + 2108^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5847 + ... + 13534.

Almost surely, 2^74500564 is an apocalyptic number.

It is an amenable number.

74500564 is a deficient number, since it is larger than the sum of its proper divisors (60223718).

74500564 is a wasteful number, since it uses less digits than its factorization.

74500564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19447 (or 19414 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 74500564 is about 8631.3709223970. The cubic root of 74500564 is about 420.7781567717.

The spelling of 74500564 in words is "seventy-four million, five hundred thousand, five hundred sixty-four".