166385222 has 8 divisors (see below), whose sum is σ = 264258936. Its totient is φ = 78298912.

The previous prime is 166385221. The next prime is 166385227. The reversal of 166385222 is 222583661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166385221) 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, 2446808 + ... + 2446875.

It is an arithmetic number, because the mean of its divisors is an integer number (33032367).

Almost surely, 2^166385222 is an apocalyptic number.

166385222 is a deficient number, since it is larger than the sum of its proper divisors (97873714).

166385222 is a wasteful number, since it uses less digits than its factorization.

166385222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893702.

The product of its digits is 34560, while the sum is 35.

The square root of 166385222 is about 12899.0395766507. The cubic root of 166385222 is about 550.0112636812.

The spelling of 166385222 in words is "one hundred sixty-six million, three hundred eighty-five thousand, two hundred twenty-two".