223565990 has 16 divisors (see below), whose sum is σ = 403099200. Its totient is φ = 89275200.

The previous prime is 223565983. The next prime is 223565999. The reversal of 223565990 is 99565322.

223565990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223565999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12590 + ... + 24609.

It is an arithmetic number, because the mean of its divisors is an integer number (25193700).

Almost surely, 2^223565990 is an apocalyptic number.

223565990 is a deficient number, since it is larger than the sum of its proper divisors (179533210).

223565990 is a wasteful number, since it uses less digits than its factorization.

223565990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37807.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 223565990 is about 14952.1232605941. The cubic root of 223565990 is about 606.9253056647.

The spelling of 223565990 in words is "two hundred twenty-three million, five hundred sixty-five thousand, nine hundred ninety".