564644263 has 2 divisors, whose sum is σ = 564644264. Its totient is φ = 564644262.

The previous prime is 564644257. The next prime is 564644293. The reversal of 564644263 is 362446465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564644263 - 2¹³ = 564636071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564644233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282322131 + 282322132.

It is an arithmetic number, because the mean of its divisors is an integer number (282322132).

Almost surely, 2^564644263 is an apocalyptic number.

564644263 is a deficient number, since it is larger than the sum of its proper divisors (1).

564644263 is an equidigital number, since it uses as much as digits as its factorization.

564644263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 40.

The square root of 564644263 is about 23762.2444857383. The cubic root of 564644263 is about 826.5294007872.

The spelling of 564644263 in words is "five hundred sixty-four million, six hundred forty-four thousand, two hundred sixty-three".