220768 has 12 divisors (see below), whose sum is σ = 434700. Its totient is φ = 110368.

The previous prime is 220757. The next prime is 220771. The reversal of 220768 is 867022.

220768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

220768 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3418 + ... + 3481.

It is an arithmetic number, because the mean of its divisors is an integer number (36225).

2²²⁰⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

220768 is a deficient number, since it is larger than the sum of its proper divisors (213932).

220768 is an equidigital number, since it uses as much as digits as its factorization.

220768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909 (or 6901 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 220768 is about 469.8595534838. The cubic root of 220768 is about 60.4382723097.

The spelling of 220768 in words is "two hundred twenty thousand, seven hundred sixty-eight".