64565064 has 48 divisors (see below), whose sum is σ = 180510720. Its totient is φ = 20826720.

The previous prime is 64565051. The next prime is 64565131. The reversal of 64565064 is 46056546.

It is a happy number.

64565064 is a `hidden beast` number, since 645 + 6 + 5 + 0 + 6 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12232 + ... + 16695.

It is an arithmetic number, because the mean of its divisors is an integer number (3760640).

Almost surely, 2^64565064 is an apocalyptic number.

It is an amenable number.

64565064 is an abundant number, since it is smaller than the sum of its proper divisors (115945656).

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

64565064 is a wasteful number, since it uses less digits than its factorization.

64565064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28970 (or 28963 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 64565064 is about 8035.2388887948. The cubic root of 64565064 is about 401.1737689637.

The spelling of 64565064 in words is "sixty-four million, five hundred sixty-five thousand, sixty-four".