564646469 has 2 divisors, whose sum is σ = 564646470. Its totient is φ = 564646468.

The previous prime is 564646451. The next prime is 564646553. The reversal of 564646469 is 964646465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559937569 + 4708900 = 23663^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 564646469 - 2⁸ = 564646213 is a prime.

It is a super-2 number, since 2×564646469² = 637651269908335922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564646429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282323234 + 282323235.

It is an arithmetic number, because the mean of its divisors is an integer number (282323235).

Almost surely, 2^564646469 is an apocalyptic number.

It is an amenable number.

564646469 is a deficient number, since it is larger than the sum of its proper divisors (1).

564646469 is an equidigital number, since it uses as much as digits as its factorization.

564646469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 50.

The square root of 564646469 is about 23762.2909038670. The cubic root of 564646469 is about 826.5304771708.

The spelling of 564646469 in words is "five hundred sixty-four million, six hundred forty-six thousand, four hundred sixty-nine".