64523328 has 28 divisors (see below), whose sum is σ = 170718480. Its totient is φ = 21507712.

The previous prime is 64523311. The next prime is 64523341. The reversal of 64523328 is 82332546.

It is a happy 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, 167838 + ... + 168221.

Almost surely, 2^64523328 is an apocalyptic number.

It is an amenable number.

64523328 is an abundant number, since it is smaller than the sum of its proper divisors (106195152).

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

64523328 is a wasteful number, since it uses less digits than its factorization.

64523328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336074 (or 336064 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 64523328 is about 8032.6414086526. The cubic root of 64523328 is about 401.0873083898.

The spelling of 64523328 in words is "sixty-four million, five hundred twenty-three thousand, three hundred twenty-eight".