564239 has 4 divisors (see below), whose sum is σ = 607656. Its totient is φ = 520824.

The previous prime is 564233. The next prime is 564251. The reversal of 564239 is 932465.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564239 is a prime.

It is a d-powerful number, because it can be written as 5 + 6 + 2¹⁵ + 4² + 3 + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21689 + ... + 21714.

It is an arithmetic number, because the mean of its divisors is an integer number (151914).

2⁵⁶⁴²³⁹ is an apocalyptic number.

564239 is a deficient number, since it is larger than the sum of its proper divisors (43417).

564239 is a wasteful number, since it uses less digits than its factorization.

564239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43416.

The product of its digits is 6480, while the sum is 29.

The square root of 564239 is about 751.1584386799. The cubic root of 564239 is about 82.6331611385.

The spelling of 564239 in words is "five hundred sixty-four thousand, two hundred thirty-nine".