64304560 has 40 divisors (see below), whose sum is σ = 150209136. Its totient is φ = 25601280.

The previous prime is 64304521. The next prime is 64304563. The reversal of 64304560 is 6540346.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64304563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16390 + ... + 19930.

Almost surely, 2^64304560 is an apocalyptic number.

It is an amenable number.

64304560 is an abundant number, since it is smaller than the sum of its proper divisors (85904576).

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

64304560 is a wasteful number, since it uses less digits than its factorization.

64304560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781 (or 3775 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64304560 is about 8019.0124080213. The cubic root of 64304560 is about 400.6334961768.

The spelling of 64304560 in words is "sixty-four million, three hundred four thousand, five hundred sixty".