56623 has 4 divisors (see below), whose sum is σ = 64720. Its totient is φ = 48528.

The previous prime is 56611. The next prime is 56629. The reversal of 56623 is 32665.

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 56623 - 2⁵ = 56591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56594 and 56603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56629) 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, 4038 + ... + 4051.

It is an arithmetic number, because the mean of its divisors is an integer number (16180).

2⁵⁶⁶²³ is an apocalyptic number.

56623 is a deficient number, since it is larger than the sum of its proper divisors (8097).

56623 is an equidigital number, since it uses as much as digits as its factorization.

56623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8096.

The product of its digits is 1080, while the sum is 22.

The square root of 56623 is about 237.9558782632. The cubic root of 56623 is about 38.3999764901.

It can be divided in two parts, 5662 and 3, that added together give a palindrome (5665).

The spelling of 56623 in words is "fifty-six thousand, six hundred twenty-three".