223666056 has 64 divisors (see below), whose sum is σ = 623750400. Its totient is φ = 74260800.

The previous prime is 223666031. The next prime is 223666057. The reversal of 223666056 is 650666322.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 223666056.

It is not an unprimeable number, because it can be changed into a prime (223666057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56626 + ... + 60446.

It is an arithmetic number, because the mean of its divisors is an integer number (9746100).

Almost surely, 2^223666056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223666056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311875200).

223666056 is an abundant number, since it is smaller than the sum of its proper divisors (400084344).

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

223666056 is a wasteful number, since it uses less digits than its factorization.

223666056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 223666056 is about 14955.4690999647. The cubic root of 223666056 is about 607.0158434798.

The spelling of 223666056 in words is "two hundred twenty-three million, six hundred sixty-six thousand, fifty-six".