223012566 has 96 divisors (see below), whose sum is σ = 568339200. Its totient is φ = 61888320.

The previous prime is 223012553. The next prime is 223012589. The reversal of 223012566 is 665210322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 973740 + ... + 973968.

It is an arithmetic number, because the mean of its divisors is an integer number (5920200).

Almost surely, 2^223012566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223012566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284169600).

223012566 is an abundant number, since it is smaller than the sum of its proper divisors (345326634).

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

223012566 is a wasteful number, since it uses less digits than its factorization.

223012566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 223012566 is about 14933.6052579409. The cubic root of 223012566 is about 606.4240896433.

Adding to 223012566 its reverse (665210322), we get a palindrome (888222888).

The spelling of 223012566 in words is "two hundred twenty-three million, twelve thousand, five hundred sixty-six".