64560393 has 6 divisors (see below), whose sum is σ = 93253914. Its totient is φ = 43040256.

The previous prime is 64560361. The next prime is 64560427. The reversal of 64560393 is 39306546.

64560393 is a `hidden beast` number, since 6 + 4 + 560 + 3 + 93 = 666.

64560393 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., 59028489 + 5531904 = 7683^2 + 2352^2 .

It is not a de Polignac number, because 64560393 - 2⁵ = 64560361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64560493) 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 in 5 ways as a sum of consecutive naturals, for example, 3586680 + ... + 3586697.

It is an arithmetic number, because the mean of its divisors is an integer number (15542319).

Almost surely, 2^64560393 is an apocalyptic number.

It is an amenable number.

64560393 is a deficient number, since it is larger than the sum of its proper divisors (28693521).

64560393 is a wasteful number, since it uses less digits than its factorization.

64560393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173383 (or 7173380 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 64560393 is about 8034.9482263422. The cubic root of 64560393 is about 401.1640943412.

The spelling of 64560393 in words is "sixty-four million, five hundred sixty thousand, three hundred ninety-three".