564664717 has 2 divisors, whose sum is σ = 564664718. Its totient is φ = 564664716.

The previous prime is 564664699. The next prime is 564664747. The reversal of 564664717 is 717466465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325838601 + 238826116 = 18051^2 + 15454^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564664717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564664747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282332358 + 282332359.

It is an arithmetic number, because the mean of its divisors is an integer number (282332359).

Almost surely, 2^564664717 is an apocalyptic number.

It is an amenable number.

564664717 is a deficient number, since it is larger than the sum of its proper divisors (1).

564664717 is an equidigital number, since it uses as much as digits as its factorization.

564664717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 564664717 is about 23762.6748704770. The cubic root of 564664717 is about 826.5393808929.

It can be divided in two parts, 564 and 664717, that added together give a triangular number (665281 = T₁₁₅₃).

The spelling of 564664717 in words is "five hundred sixty-four million, six hundred sixty-four thousand, seven hundred seventeen".