564505873 has 4 divisors (see below), whose sum is σ = 564808500. Its totient is φ = 564203248.

The previous prime is 564505871. The next prime is 564505891. The reversal of 564505873 is 378505465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148060224 + 416445649 = 12168^2 + 20407^2 .

It is a cyclic number.

It is not a de Polignac number, because 564505873 - 2¹ = 564505871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564505871) 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 in 3 ways as a sum of consecutive naturals, for example, 148498 + ... + 152251.

It is an arithmetic number, because the mean of its divisors is an integer number (141202125).

Almost surely, 2^564505873 is an apocalyptic number.

It is an amenable number.

564505873 is a deficient number, since it is larger than the sum of its proper divisors (302627).

564505873 is a wasteful number, since it uses less digits than its factorization.

564505873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302626.

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 564505873 is about 23759.3323348953. The cubic root of 564505873 is about 826.4618699202.

The spelling of 564505873 in words is "five hundred sixty-four million, five hundred five thousand, eight hundred seventy-three".