220868 has 6 divisors (see below), whose sum is σ = 386526. Its totient is φ = 110432.

The previous prime is 220861. The next prime is 220873. The reversal of 220868 is 868022.

It can be written as a sum of positive squares in only one way, i.e., 200704 + 20164 = 448^2 + 142^2 .

It is not an unprimeable number, because it can be changed into a prime (220861) by changing a digit.

220868 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, 27605 + ... + 27612.

It is an arithmetic number, because the mean of its divisors is an integer number (64421).

2²²⁰⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

220868 is a deficient number, since it is larger than the sum of its proper divisors (165658).

220868 is a wasteful number, since it uses less digits than its factorization.

220868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55221 (or 55219 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 220868 is about 469.9659562139. The cubic root of 220868 is about 60.4473963900.

The spelling of 220868 in words is "two hundred twenty thousand, eight hundred sixty-eight".