223612 has 6 divisors (see below), whose sum is σ = 391328. Its totient is φ = 111804.

The previous prime is 223589. The next prime is 223621. The reversal of 223612 is 216322.

223612 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27948 + ... + 27955.

2²²³⁶¹² is an apocalyptic number.

It is an amenable number.

223612 is a deficient number, since it is larger than the sum of its proper divisors (167716).

223612 is a wasteful number, since it uses less digits than its factorization.

223612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55907 (or 55905 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 223612 is about 472.8763051793. The cubic root of 223612 is about 60.6966937993.

Adding to 223612 its reverse (216322), we get a palindrome (439934).

The spelling of 223612 in words is "two hundred twenty-three thousand, six hundred twelve".