166945886 has 8 divisors (see below), whose sum is σ = 250811424. Its totient is φ = 83342080.

The previous prime is 166945859. The next prime is 166945901. The reversal of 166945886 is 688549661.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63830 + ... + 66393.

It is an arithmetic number, because the mean of its divisors is an integer number (31351428).

Almost surely, 2^166945886 is an apocalyptic number.

166945886 is a deficient number, since it is larger than the sum of its proper divisors (83865538).

166945886 is a wasteful number, since it uses less digits than its factorization.

166945886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130866.

The product of its digits is 2488320, while the sum is 53.

The square root of 166945886 is about 12920.7540801611. The cubic root of 166945886 is about 550.6283573306.

The spelling of 166945886 in words is "one hundred sixty-six million, nine hundred forty-five thousand, eight hundred eighty-six".