220885823 has 2 divisors, whose sum is σ = 220885824. Its totient is φ = 220885822.

The previous prime is 220885799. The next prime is 220885829. The reversal of 220885823 is 328588022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220885823 - 2¹⁸ = 220623679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220885829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110442911 + 110442912.

It is an arithmetic number, because the mean of its divisors is an integer number (110442912).

Almost surely, 2^220885823 is an apocalyptic number.

220885823 is a deficient number, since it is larger than the sum of its proper divisors (1).

220885823 is an equidigital number, since it uses as much as digits as its factorization.

220885823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 220885823 is about 14862.2280631136. The cubic root of 220885823 is about 604.4902228568.

The spelling of 220885823 in words is "two hundred twenty million, eight hundred eighty-five thousand, eight hundred twenty-three".