223530644 has 12 divisors (see below), whose sum is σ = 391704768. Its totient is φ = 111615000.

The previous prime is 223530631. The next prime is 223530667. The reversal of 223530644 is 446035322.

223530644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 34202 + ... + 40209.

It is an arithmetic number, because the mean of its divisors is an integer number (32642064).

Almost surely, 2^223530644 is an apocalyptic number.

It is an amenable number.

223530644 is a deficient number, since it is larger than the sum of its proper divisors (168174124).

223530644 is a wasteful number, since it uses less digits than its factorization.

223530644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75166 (or 75164 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 223530644 is about 14950.9412412731. The cubic root of 223530644 is about 606.8933188190.

Adding to 223530644 its reverse (446035322), we get a palindrome (669565966).

The spelling of 223530644 in words is "two hundred twenty-three million, five hundred thirty thousand, six hundred forty-four".