171166856 has 32 divisors (see below), whose sum is σ = 374595840. Its totient is φ = 71795328.

The previous prime is 171166837. The next prime is 171166859. The reversal of 171166856 is 658661171.

171166856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) 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 (171166859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29885 + ... + 35148.

It is an arithmetic number, because the mean of its divisors is an integer number (11706120).

Almost surely, 2^171166856 is an apocalyptic number.

It is an amenable number.

171166856 is an abundant number, since it is smaller than the sum of its proper divisors (203428984).

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

171166856 is a wasteful number, since it uses less digits than its factorization.

171166856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65093 (or 65089 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 171166856 is about 13083.0751736738. The cubic root of 171166856 is about 555.2303845624.

The spelling of 171166856 in words is "one hundred seventy-one million, one hundred sixty-six thousand, eight hundred fifty-six".