222566166 has 24 divisors (see below), whose sum is σ = 482507064. Its totient is φ = 74145600.

The previous prime is 222566131. The next prime is 222566191. The reversal of 222566166 is 661665222.

It is a self number, because there is not a number n which added to its sum of digits gives 222566166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49150 + ... + 53486.

It is an arithmetic number, because the mean of its divisors is an integer number (20104461).

Almost surely, 2^222566166 is an apocalyptic number.

222566166 is an abundant number, since it is smaller than the sum of its proper divisors (259940898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222566166 is a wasteful number, since it uses less digits than its factorization.

222566166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196 (or 7193 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 222566166 is about 14918.6516146735. The cubic root of 222566166 is about 606.0191968562.

The spelling of 222566166 in words is "two hundred twenty-two million, five hundred sixty-six thousand, one hundred sixty-six".