564858505 has 12 divisors (see below), whose sum is σ = 715385412. Its totient is φ = 428101920.

The previous prime is 564858487. The next prime is 564858521. The reversal of 564858505 is 505858465.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 280194121 + 284664384 = 16739^2 + 16872^2 .

It is not a de Polignac number, because 564858505 - 2⁷ = 564858377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 154666 + ... + 158275.

It is an arithmetic number, because the mean of its divisors is an integer number (59615451).

Almost surely, 2^564858505 is an apocalyptic number.

It is an amenable number.

564858505 is a deficient number, since it is larger than the sum of its proper divisors (150526907).

564858505 is a wasteful number, since it uses less digits than its factorization.

564858505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312984 (or 312965 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 46.

The square root of 564858505 is about 23766.7520919456. The cubic root of 564858505 is about 826.6339237776.

The spelling of 564858505 in words is "five hundred sixty-four million, eight hundred fifty-eight thousand, five hundred five".