564823 has 6 divisors (see below), whose sum is σ = 657096. Its totient is φ = 484092.

The previous prime is 564797. The next prime is 564827. The reversal of 564823 is 328465.

It is a de Polignac number, because none of the positive numbers 2^k-564823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 564791 and 564800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5715 + ... + 5812.

It is an arithmetic number, because the mean of its divisors is an integer number (109516).

2⁵⁶⁴⁸²³ is an apocalyptic number.

564823 is a deficient number, since it is larger than the sum of its proper divisors (92273).

564823 is a wasteful number, since it uses less digits than its factorization.

564823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11541 (or 11534 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 564823 is about 751.5470710474. The cubic root of 564823 is about 82.6616603657.

It can be divided in two parts, 5648 and 23, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 564823 in words is "five hundred sixty-four thousand, eight hundred twenty-three".