166650222 has 32 divisors (see below), whose sum is σ = 339550848. Its totient is φ = 54517536.

The previous prime is 166650217. The next prime is 166650223. The reversal of 166650222 is 222056661.

It is a self number, because there is not a number n which added to its sum of digits gives 166650222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166650223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80148 + ... + 82200.

It is an arithmetic number, because the mean of its divisors is an integer number (10610964).

Almost surely, 2^166650222 is an apocalyptic number.

166650222 is an abundant number, since it is smaller than the sum of its proper divisors (172900626).

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

166650222 is a wasteful number, since it uses less digits than its factorization.

166650222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 166650222 is about 12909.3075724455. The cubic root of 166650222 is about 550.3031078561.

The spelling of 166650222 in words is "one hundred sixty-six million, six hundred fifty thousand, two hundred twenty-two".