220856903 has 8 divisors (see below), whose sum is σ = 223929600. Its totient is φ = 217791288.

The previous prime is 220856891. The next prime is 220856939. The reversal of 220856903 is 309658022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220856903 - 2⁴ = 220856887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220856003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100268 + ... + 102446.

It is an arithmetic number, because the mean of its divisors is an integer number (27991200).

Almost surely, 2^220856903 is an apocalyptic number.

220856903 is a deficient number, since it is larger than the sum of its proper divisors (3072697).

220856903 is a wasteful number, since it uses less digits than its factorization.

220856903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 220856903 is about 14861.2550950450. The cubic root of 220856903 is about 604.4638402669.

The spelling of 220856903 in words is "two hundred twenty million, eight hundred fifty-six thousand, nine hundred three".