64560317 has 2 divisors, whose sum is σ = 64560318. Its totient is φ = 64560316.

The previous prime is 64560299. The next prime is 64560341. The reversal of 64560317 is 71306546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 143641 = 8026^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 64560317 - 2¹⁴ = 64543933 is a prime.

It is a super-2 number, since 2×64560317² = 8336069062280978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64520317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32280158 + 32280159.

It is an arithmetic number, because the mean of its divisors is an integer number (32280159).

Almost surely, 2^64560317 is an apocalyptic number.

It is an amenable number.

64560317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64560317 is an equidigital number, since it uses as much as digits as its factorization.

64560317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 64560317 is about 8034.9434970011. The cubic root of 64560317 is about 401.1639369253.

The spelling of 64560317 in words is "sixty-four million, five hundred sixty thousand, three hundred seventeen".