564173609 has 2 divisors, whose sum is σ = 564173610. Its totient is φ = 564173608.

The previous prime is 564173591. The next prime is 564173629. The reversal of 564173609 is 906371465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563017984 + 1155625 = 23728^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 564173609 - 2²⁸ = 295738153 is a prime.

It is a super-2 number, since 2×564173609² = 636583722184169762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (564173629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282086804 + 282086805.

It is an arithmetic number, because the mean of its divisors is an integer number (282086805).

Almost surely, 2^564173609 is an apocalyptic number.

It is an amenable number.

564173609 is a deficient number, since it is larger than the sum of its proper divisors (1).

564173609 is an equidigital number, since it uses as much as digits as its factorization.

564173609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 564173609 is about 23752.3390216627. The cubic root of 564173609 is about 826.2996883061.

The spelling of 564173609 in words is "five hundred sixty-four million, one hundred seventy-three thousand, six hundred nine".