566623 has 4 divisors (see below), whose sum is σ = 577368. Its totient is φ = 555880.

The previous prime is 566617. The next prime is 566633. The reversal of 566623 is 326665.

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

It is a cyclic number.

It is not a de Polignac number, because 566623 - 2¹³ = 558431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 566591 and 566600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566633) 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 3 ways as a sum of consecutive naturals, for example, 5293 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (144342).

2⁵⁶⁶⁶²³ is an apocalyptic number.

566623 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

566623 is a deficient number, since it is larger than the sum of its proper divisors (10745).

566623 is a wasteful number, since it uses less digits than its factorization.

566623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10744.

The product of its digits is 6480, while the sum is 28.

The square root of 566623 is about 752.7436482628. The cubic root of 566623 is about 82.7493770547.

It can be divided in two parts, 56662 and 3, that added together give a palindrome (56665).

The spelling of 566623 in words is "five hundred sixty-six thousand, six hundred twenty-three".