64764528 has 40 divisors (see below), whose sum is σ = 167639568. Its totient is φ = 21545472.

The previous prime is 64764523. The next prime is 64764529. The reversal of 64764528 is 82546746.

It is a self number, because there is not a number n which added to its sum of digits gives 64764528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64764523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31500 + ... + 33492.

Almost surely, 2^64764528 is an apocalyptic number.

It is an amenable number.

64764528 is an abundant number, since it is smaller than the sum of its proper divisors (102875040).

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

64764528 is a wasteful number, since it uses less digits than its factorization.

64764528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681 (or 2675 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 64764528 is about 8047.6411450810. The cubic root of 64764528 is about 401.5864661608.

The spelling of 64764528 in words is "sixty-four million, seven hundred sixty-four thousand, five hundred twenty-eight".