166870017 has 16 divisors (see below), whose sum is σ = 248880000. Its totient is φ = 110497392.

The previous prime is 166870013. The next prime is 166870139. The reversal of 166870017 is 710078661.

It is a happy number.

It is not a de Polignac number, because 166870017 - 2² = 166870013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166870013) 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, 16717 + ... + 24762.

It is an arithmetic number, because the mean of its divisors is an integer number (15555000).

Almost surely, 2^166870017 is an apocalyptic number.

It is an amenable number.

166870017 is a deficient number, since it is larger than the sum of its proper divisors (82009983).

166870017 is a wasteful number, since it uses less digits than its factorization.

166870017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41637 (or 41631 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 166870017 is about 12917.8178110701. The cubic root of 166870017 is about 550.5449331869.

The spelling of 166870017 in words is "one hundred sixty-six million, eight hundred seventy thousand, seventeen".