223564 has 12 divisors (see below), whose sum is σ = 426888. Its totient is φ = 101600.

The previous prime is 223549. The next prime is 223577. The reversal of 223564 is 465322.

223564 = T₁₈₇ + T₁₈₈ + ... + T₁₉₈.

It is a happy number.

223564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2497 + ... + 2584.

It is an arithmetic number, because the mean of its divisors is an integer number (35574).

2²²³⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

223564 is a deficient number, since it is larger than the sum of its proper divisors (203324).

223564 is a wasteful number, since it uses less digits than its factorization.

223564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096 (or 5094 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 223564 is about 472.8255492251. The cubic root of 223564 is about 60.6923504877.

Adding to 223564 its reverse (465322), we get a palindrome (688886).

It can be divided in two parts, 223 and 564, that added together give a palindrome (787).

The spelling of 223564 in words is "two hundred twenty-three thousand, five hundred sixty-four".