564504665 has 4 divisors (see below), whose sum is σ = 677405604. Its totient is φ = 451603728.

The previous prime is 564504659. The next prime is 564504667. The reversal of 564504665 is 566405465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566405465 = 5 ⋅113281093.

It can be written as a sum of positive squares in 2 ways, for example, as 379626256 + 184878409 = 19484^2 + 13597^2 .

It is a cyclic number.

It is not a de Polignac number, because 564504665 - 2¹⁸ = 564242521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564504667) 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, 56450462 + ... + 56450471.

It is an arithmetic number, because the mean of its divisors is an integer number (169351401).

Almost surely, 2^564504665 is an apocalyptic number.

It is an amenable number.

564504665 is a deficient number, since it is larger than the sum of its proper divisors (112900939).

564504665 is a wasteful number, since it uses less digits than its factorization.

564504665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112900938.

The product of its (nonzero) digits is 432000, while the sum is 41.

The square root of 564504665 is about 23759.3069132919. The cubic root of 564504665 is about 826.4612803978.

The spelling of 564504665 in words is "five hundred sixty-four million, five hundred four thousand, six hundred sixty-five".