64528704 has 112 divisors (see below), whose sum is σ = 192024000. Its totient is φ = 21247488.

The previous prime is 64528699. The next prime is 64528721. The reversal of 64528704 is 40782546.

64528704 is a `hidden beast` number, since 64 + 528 + 70 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184722 + ... + 185070.

It is an arithmetic number, because the mean of its divisors is an integer number (1714500).

Almost surely, 2^64528704 is an apocalyptic number.

64528704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64528704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96012000).

64528704 is an abundant number, since it is smaller than the sum of its proper divisors (127495296).

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

64528704 is a wasteful number, since it uses less digits than its factorization.

64528704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 64528704 is about 8032.9760363143. The cubic root of 64528704 is about 401.0984474385.

The spelling of 64528704 in words is "sixty-four million, five hundred twenty-eight thousand, seven hundred four".