166717107 has 12 divisors (see below), whose sum is σ = 241002840. Its totient is φ = 111057408.

The previous prime is 166717073. The next prime is 166717121. The reversal of 166717107 is 701717661.

It is not a de Polignac number, because 166717107 - 2⁶ = 166717043 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (166717157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6108 + ... + 19254.

It is an arithmetic number, because the mean of its divisors is an integer number (20083570).

Almost surely, 2^166717107 is an apocalyptic number.

166717107 is a deficient number, since it is larger than the sum of its proper divisors (74285733).

166717107 is a wasteful number, since it uses less digits than its factorization.

166717107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14562 (or 14559 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 36.

The square root of 166717107 is about 12911.8978852839. The cubic root of 166717107 is about 550.3767193198.

The spelling of 166717107 in words is "one hundred sixty-six million, seven hundred seventeen thousand, one hundred seven".