64560072 has 16 divisors (see below), whose sum is σ = 161400240. Its totient is φ = 21520016.

The previous prime is 64560053. The next prime is 64560077. The reversal of 64560072 is 27006546.

It is not an unprimeable number, because it can be changed into a prime (64560077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344978 + ... + 1345025.

It is an arithmetic number, because the mean of its divisors is an integer number (10087515).

Almost surely, 2^64560072 is an apocalyptic number.

It is an amenable number.

64560072 is an abundant number, since it is smaller than the sum of its proper divisors (96840168).

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

64560072 is a wasteful number, since it uses less digits than its factorization.

64560072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690012 (or 2690008 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 64560072 is about 8034.9282510798. The cubic root of 64560072 is about 401.1634294656.

The spelling of 64560072 in words is "sixty-four million, five hundred sixty thousand, seventy-two".