166020717 has 16 divisors (see below), whose sum is σ = 230054400. Its totient is φ = 106382400.

The previous prime is 166020713. The next prime is 166020731. The reversal of 166020717 is 717020661.

It is a happy number.

It is not a de Polignac number, because 166020717 - 2² = 166020713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166020713) 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, 7867 + ... + 19847.

It is an arithmetic number, because the mean of its divisors is an integer number (14378400).

Almost surely, 2^166020717 is an apocalyptic number.

It is an amenable number.

166020717 is a deficient number, since it is larger than the sum of its proper divisors (64033683).

166020717 is a wasteful number, since it uses less digits than its factorization.

166020717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12164.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 166020717 is about 12884.9026771645. The cubic root of 166020717 is about 549.6093280762.

The spelling of 166020717 in words is "one hundred sixty-six million, twenty thousand, seven hundred seventeen".