166551268 has 24 divisors (see below), whose sum is σ = 320568192. Its totient is φ = 75233184.

The previous prime is 166551247. The next prime is 166551293. The reversal of 166551268 is 862155661.

It is a self number, because there is not a number n which added to its sum of digits gives 166551268.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31630 + ... + 36517.

It is an arithmetic number, because the mean of its divisors is an integer number (13357008).

Almost surely, 2^166551268 is an apocalyptic number.

It is an amenable number.

166551268 is a deficient number, since it is larger than the sum of its proper divisors (154016924).

166551268 is a wasteful number, since it uses less digits than its factorization.

166551268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68211 (or 68209 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 166551268 is about 12905.4743423092. The cubic root of 166551268 is about 550.1941661563.

The spelling of 166551268 in words is "one hundred sixty-six million, five hundred fifty-one thousand, two hundred sixty-eight".