64528695 has 72 divisors (see below), whose sum is σ = 140588448. Its totient is φ = 26801280.

The previous prime is 64528687. The next prime is 64528699. The reversal of 64528695 is 59682546.

64528695 is a `hidden beast` number, since 64 + 528 + 69 + 5 = 666.

It is not a de Polignac number, because 64528695 - 2³ = 64528687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64528695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64528699) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 37269 + ... + 38961.

Almost surely, 2^64528695 is an apocalyptic number.

64528695 is an abundant number, since it is smaller than the sum of its proper divisors (76059753).

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

64528695 is a wasteful number, since it uses less digits than its factorization.

64528695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1719 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 64528695 is about 8032.9754761234. The cubic root of 64528695 is about 401.0984287911.

64528695 divided by its sum of digits (45) gives a triangular number (1433971 = T₁₆₉₃).

The spelling of 64528695 in words is "sixty-four million, five hundred twenty-eight thousand, six hundred ninety-five".