566823 has 4 divisors (see below), whose sum is σ = 755768. Its totient is φ = 377880.

The previous prime is 566821. The next prime is 566833. The reversal of 566823 is 328665.

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

It is not a de Polignac number, because 566823 - 2¹ = 566821 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566821) 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, 94468 + ... + 94473.

It is an arithmetic number, because the mean of its divisors is an integer number (188942).

2⁵⁶⁶⁸²³ is an apocalyptic number.

566823 is a deficient number, since it is larger than the sum of its proper divisors (188945).

566823 is a wasteful number, since it uses less digits than its factorization.

566823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188944.

The product of its digits is 8640, while the sum is 30.

The square root of 566823 is about 752.8764838936. The cubic root of 566823 is about 82.7591118805.

The spelling of 566823 in words is "five hundred sixty-six thousand, eight hundred twenty-three".