222657 has 4 divisors (see below), whose sum is σ = 296880. Its totient is φ = 148436.

The previous prime is 222647. The next prime is 222659. The reversal of 222657 is 756222.

222657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222657 - 2¹⁴ = 206273 is a prime.

It is a super-2 number, since 2×222657² = 99152279298, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (222659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37107 + ... + 37112.

It is an arithmetic number, because the mean of its divisors is an integer number (74220).

2²²²⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

222657 is a deficient number, since it is larger than the sum of its proper divisors (74223).

222657 is an equidigital number, since it uses as much as digits as its factorization.

222657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74222.

The product of its digits is 1680, while the sum is 24.

The square root of 222657 is about 471.8654469232. The cubic root of 222657 is about 60.6101628764.

Adding to 222657 its reverse (756222), we get a palindrome (978879).

The spelling of 222657 in words is "two hundred twenty-two thousand, six hundred fifty-seven".