223666644 has 48 divisors (see below), whose sum is σ = 538090560. Its totient is φ = 72264960.

The previous prime is 223666633. The next prime is 223666661. The reversal of 223666644 is 446666322.

It is a happy number.

223666644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78802 + ... + 81590.

It is an arithmetic number, because the mean of its divisors is an integer number (11210220).

Almost surely, 2^223666644 is an apocalyptic number.

It is an amenable number.

223666644 is an abundant number, since it is smaller than the sum of its proper divisors (314423916).

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

223666644 is a wasteful number, since it uses less digits than its factorization.

223666644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000 (or 2998 counting only the distinct ones).

The product of its digits is 248832, while the sum is 39.

The square root of 223666644 is about 14955.4887583121. The cubic root of 223666644 is about 607.0163754112.

The spelling of 223666644 in words is "two hundred twenty-three million, six hundred sixty-six thousand, six hundred forty-four".