171668 has 12 divisors (see below), whose sum is σ = 343392. Its totient is φ = 73560.

The previous prime is 171659. The next prime is 171671. The reversal of 171668 is 866171.

171668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

171668 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 171668.

It is a congruent number.

It is an unprimeable number.

171668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038 + ... + 3093.

It is an arithmetic number, because the mean of its divisors is an integer number (28616).

2¹⁷¹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

171668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171668 is a wasteful number, since it uses less digits than its factorization.

171668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142 (or 6140 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 171668 is about 414.3283721881. The cubic root of 171668 is about 55.5771726246.

The spelling of 171668 in words is "one hundred seventy-one thousand, six hundred sixty-eight".