220805863 has 2 divisors, whose sum is σ = 220805864. Its totient is φ = 220805862.

The previous prime is 220805861. The next prime is 220805927. The reversal of 220805863 is 368508022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220805863 - 2¹ = 220805861 is a prime.

Together with 220805861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220805861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110402931 + 110402932.

It is an arithmetic number, because the mean of its divisors is an integer number (110402932).

Almost surely, 2^220805863 is an apocalyptic number.

220805863 is a deficient number, since it is larger than the sum of its proper divisors (1).

220805863 is an equidigital number, since it uses as much as digits as its factorization.

220805863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 220805863 is about 14859.5377788140. The cubic root of 220805863 is about 604.4172728426.

The spelling of 220805863 in words is "two hundred twenty million, eight hundred five thousand, eight hundred sixty-three".