166885017 has 16 divisors (see below), whose sum is σ = 239987328. Its totient is φ = 102545280.

The previous prime is 166885013. The next prime is 166885091. The reversal of 166885017 is 710588661.

It is not a de Polignac number, because 166885017 - 2² = 166885013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166885017.

It is not an unprimeable number, because it can be changed into a prime (166885013) 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, 26868 + ... + 32490.

It is an arithmetic number, because the mean of its divisors is an integer number (14999208).

Almost surely, 2^166885017 is an apocalyptic number.

It is an amenable number.

166885017 is a deficient number, since it is larger than the sum of its proper divisors (73102311).

166885017 is a wasteful number, since it uses less digits than its factorization.

166885017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 166885017 is about 12918.3983914416. The cubic root of 166885017 is about 550.5614289135.

The spelling of 166885017 in words is "one hundred sixty-six million, eight hundred eighty-five thousand, seventeen".