223943664 has 80 divisors (see below), whose sum is σ = 667814400. Its totient is φ = 63340800.

The previous prime is 223943653. The next prime is 223943693. The reversal of 223943664 is 466349322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30637 + ... + 37235.

It is an arithmetic number, because the mean of its divisors is an integer number (8347680).

Almost surely, 2^223943664 is an apocalyptic number.

223943664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223943664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333907200).

223943664 is an abundant number, since it is smaller than the sum of its proper divisors (443870736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223943664 is a wasteful number, since it uses less digits than its factorization.

223943664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6718 (or 6712 counting only the distinct ones).

The product of its digits is 186624, while the sum is 39.

The square root of 223943664 is about 14964.7473750812. The cubic root of 223943664 is about 607.2668766312.

The spelling of 223943664 in words is "two hundred twenty-three million, nine hundred forty-three thousand, six hundred sixty-four".