64560928 has 12 divisors (see below), whose sum is σ = 127104390. Its totient is φ = 32280448.

The previous prime is 64560919. The next prime is 64560929. The reversal of 64560928 is 82906546.

It is a happy number.

64560928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61277584 + 3283344 = 7828^2 + 1812^2 .

It is a super-2 number, since 2×64560928² = 8336226848442368, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (64560929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008733 + ... + 1008796.

Almost surely, 2^64560928 is an apocalyptic number.

It is an amenable number.

64560928 is a deficient number, since it is larger than the sum of its proper divisors (62543462).

64560928 is a wasteful number, since it uses less digits than its factorization.

64560928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017539 (or 2017531 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 64560928 is about 8034.9815183359. The cubic root of 64560928 is about 401.1652024622.

The spelling of 64560928 in words is "sixty-four million, five hundred sixty thousand, nine hundred twenty-eight".