223868 has 6 divisors (see below), whose sum is σ = 391776. Its totient is φ = 111932.

The previous prime is 223849. The next prime is 223903. The reversal of 223868 is 868322.

It is a self number, because there is not a number n which added to its sum of digits gives 223868.

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, 27980 + ... + 27987.

It is an arithmetic number, because the mean of its divisors is an integer number (65296).

2²²³⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

223868 is a deficient number, since it is larger than the sum of its proper divisors (167908).

223868 is a wasteful number, since it uses less digits than its factorization.

223868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55971 (or 55969 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 223868 is about 473.1469116458. The cubic root of 223868 is about 60.7198476368.

The spelling of 223868 in words is "two hundred twenty-three thousand, eight hundred sixty-eight".