223644864 has 28 divisors (see below), whose sum is σ = 591727544. Its totient is φ = 74548224.

The previous prime is 223644851. The next prime is 223644887. The reversal of 223644864 is 468446322.

It is a nude number because it is divisible by every one of its digits.

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 in 3 ways as a sum of consecutive naturals, for example, 582217 + ... + 582600.

Almost surely, 2^223644864 is an apocalyptic number.

223644864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

223644864 is an abundant number, since it is smaller than the sum of its proper divisors (368082680).

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

223644864 is a wasteful number, since it uses less digits than its factorization.

223644864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164832 (or 1164822 counting only the distinct ones).

The product of its digits is 221184, while the sum is 39.

The square root of 223644864 is about 14954.7605798288. The cubic root of 223644864 is about 606.9966716152.

The spelling of 223644864 in words is "two hundred twenty-three million, six hundred forty-four thousand, eight hundred sixty-four".