222817 has 8 divisors (see below), whose sum is σ = 257600. Its totient is φ = 188784.

The previous prime is 222799. The next prime is 222823. The reversal of 222817 is 718222.

222817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859 + ... + 1087.

It is an arithmetic number, because the mean of its divisors is an integer number (32200).

2²²²⁸¹⁷ is an apocalyptic number.

It is an amenable number.

222817 is a deficient number, since it is larger than the sum of its proper divisors (34783).

222817 is a wasteful number, since it uses less digits than its factorization.

222817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375.

The product of its digits is 448, while the sum is 22.

The square root of 222817 is about 472.0349563327. The cubic root of 222817 is about 60.6246774348.

The spelling of 222817 in words is "two hundred twenty-two thousand, eight hundred seventeen".