564623 has 4 divisors (see below), whose sum is σ = 594360. Its totient is φ = 534888.

The previous prime is 564617. The next prime is 564643. The reversal of 564623 is 326465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326465 = 5 ⋅65293.

It is not a de Polignac number, because 564623 - 2⁴ = 564607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 564592 and 564601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564643) 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, 14840 + ... + 14877.

It is an arithmetic number, because the mean of its divisors is an integer number (148590).

2⁵⁶⁴⁶²³ is an apocalyptic number.

564623 is a deficient number, since it is larger than the sum of its proper divisors (29737).

564623 is a wasteful number, since it uses less digits than its factorization.

564623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29736.

The product of its digits is 4320, while the sum is 26.

The square root of 564623 is about 751.4140004019. The cubic root of 564623 is about 82.6519025691.

It can be divided in two parts, 56462 and 3, that added together give a palindrome (56465).

The spelling of 564623 in words is "five hundred sixty-four thousand, six hundred twenty-three".