167772166 has 32 divisors (see below), whose sum is σ = 278611200. Its totient is φ = 75414240.

The previous prime is 167772161. The next prime is 167772193. The reversal of 167772166 is 661277761.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167772161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120796 + ... + 122176.

It is an arithmetic number, because the mean of its divisors is an integer number (8706600).

Almost surely, 2^167772166 is an apocalyptic number.

167772166 is a deficient number, since it is larger than the sum of its proper divisors (110839034).

167772166 is a wasteful number, since it uses less digits than its factorization.

167772166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its digits is 148176, while the sum is 43.

The square root of 167772166 is about 12952.6895276618. The cubic root of 167772166 is about 551.5352872230.

The spelling of 167772166 in words is "one hundred sixty-seven million, seven hundred seventy-two thousand, one hundred sixty-six".