564638273 has 2 divisors, whose sum is σ = 564638274. Its totient is φ = 564638272.

The previous prime is 564638267. The next prime is 564638297. The reversal of 564638273 is 372836465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522945424 + 41692849 = 22868^2 + 6457^2 .

It is a cyclic number.

It is not a de Polignac number, because 564638273 - 2¹² = 564634177 is a prime.

It is not a weakly prime, because it can be changed into another prime (564638573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282319136 + 282319137.

It is an arithmetic number, because the mean of its divisors is an integer number (282319137).

Almost surely, 2^564638273 is an apocalyptic number.

It is an amenable number.

564638273 is a deficient number, since it is larger than the sum of its proper divisors (1).

564638273 is an equidigital number, since it uses as much as digits as its factorization.

564638273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 44.

The square root of 564638273 is about 23762.1184451218. The cubic root of 564638273 is about 826.5264780451.

The spelling of 564638273 in words is "five hundred sixty-four million, six hundred thirty-eight thousand, two hundred seventy-three".