222566 has 8 divisors (see below), whose sum is σ = 351480. Its totient is φ = 105408.

The previous prime is 222557. The next prime is 222587. The reversal of 222566 is 665222.

It is a happy number.

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

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891 + ... + 2966.

It is an arithmetic number, because the mean of its divisors is an integer number (43935).

2²²²⁵⁶⁶ is an apocalyptic number.

222566 is a deficient number, since it is larger than the sum of its proper divisors (128914).

222566 is a wasteful number, since it uses less digits than its factorization.

222566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878.

The product of its digits is 1440, while the sum is 23.

The square root of 222566 is about 471.7690112756. The cubic root of 222566 is about 60.6019046191.

Adding to 222566 its reverse (665222), we get a palindrome (887788).

The spelling of 222566 in words is "two hundred twenty-two thousand, five hundred sixty-six".