223305663 has 16 divisors (see below), whose sum is σ = 341185280. Its totient is φ = 127262016.

The previous prime is 223305637. The next prime is 223305697. The reversal of 223305663 is 366503322.

It is not a de Polignac number, because 223305663 - 2¹² = 223301567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223305663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223305623) 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, 6070 + ... + 21987.

It is an arithmetic number, because the mean of its divisors is an integer number (21324080).

Almost surely, 2^223305663 is an apocalyptic number.

223305663 is a deficient number, since it is larger than the sum of its proper divisors (117879617).

223305663 is a wasteful number, since it uses less digits than its factorization.

223305663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 223305663 is about 14943.4153726650. The cubic root of 223305663 is about 606.6896401087.

Adding to 223305663 its reverse (366503322), we get a palindrome (589808985).

The spelling of 223305663 in words is "two hundred twenty-three million, three hundred five thousand, six hundred sixty-three".