220863775 has 12 divisors (see below), whose sum is σ = 298768824. Its totient is φ = 160628000.

The previous prime is 220863749. The next prime is 220863787. The reversal of 220863775 is 577368022.

It is not a de Polignac number, because 220863775 - 2⁷ = 220863647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401296 + ... + 401845.

It is an arithmetic number, because the mean of its divisors is an integer number (24897402).

Almost surely, 2^220863775 is an apocalyptic number.

220863775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

220863775 is a deficient number, since it is larger than the sum of its proper divisors (77905049).

220863775 is a wasteful number, since it uses less digits than its factorization.

220863775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803162 (or 803157 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 220863775 is about 14861.4862984831. The cubic root of 220863775 is about 604.4701095335.

The spelling of 220863775 in words is "two hundred twenty million, eight hundred sixty-three thousand, seven hundred seventy-five".