223604 has 6 divisors (see below), whose sum is σ = 391314. Its totient is φ = 111800.

The previous prime is 223589. The next prime is 223621. The reversal of 223604 is 406322.

223604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 220900 + 2704 = 470^2 + 52^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27947 + ... + 27954.

It is an arithmetic number, because the mean of its divisors is an integer number (65219).

2²²³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

223604 is a deficient number, since it is larger than the sum of its proper divisors (167710).

223604 is a wasteful number, since it uses less digits than its factorization.

223604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55905 (or 55903 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 223604 is about 472.8678462319. The cubic root of 223604 is about 60.6959699572.

Adding to 223604 its reverse (406322), we get a palindrome (629926).

The spelling of 223604 in words is "two hundred twenty-three thousand, six hundred four".