166672222 has 8 divisors (see below), whose sum is σ = 258629400. Its totient is φ = 80462424.

The previous prime is 166672211. The next prime is 166672223. The reversal of 166672222 is 222276661.

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 (166672223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436772 + ... + 1436887.

It is an arithmetic number, because the mean of its divisors is an integer number (32328675).

Almost surely, 2^166672222 is an apocalyptic number.

166672222 is a deficient number, since it is larger than the sum of its proper divisors (91957178).

166672222 is a wasteful number, since it uses less digits than its factorization.

166672222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873690.

The product of its digits is 24192, while the sum is 34.

The square root of 166672222 is about 12910.1596427000. The cubic root of 166672222 is about 550.3273225167.

The spelling of 166672222 in words is "one hundred sixty-six million, six hundred seventy-two thousand, two hundred twenty-two".