64684528 has 20 divisors (see below), whose sum is σ = 125871408. Its totient is φ = 32201600.

The previous prime is 64684523. The next prime is 64684537. The reversal of 64684528 is 82548646.

64684528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64684523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4948 + ... + 12403.

Almost surely, 2^64684528 is an apocalyptic number.

It is an amenable number.

64684528 is a deficient number, since it is larger than the sum of its proper divisors (61186880).

64684528 is a wasteful number, since it uses less digits than its factorization.

64684528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17592 (or 17586 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The square root of 64684528 is about 8042.6692086645. The cubic root of 64684528 is about 401.4210455952.

The spelling of 64684528 in words is "sixty-four million, six hundred eighty-four thousand, five hundred twenty-eight".