166170 has 32 divisors (see below), whose sum is σ = 414720. Its totient is φ = 42560.

The previous prime is 166169. The next prime is 166183. The reversal of 166170 is 71661.

It is a super-2 number, since 2×166170² = 55224937800, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166170.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775 + ... + 965.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2¹⁶⁶¹⁷⁰ is an apocalyptic number.

166170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207360).

166170 is an abundant number, since it is smaller than the sum of its proper divisors (248550).

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

166170 is a wasteful number, since it uses less digits than its factorization.

166170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 166170 is about 407.6395466586. The cubic root of 166170 is about 54.9774011840.

The spelling of 166170 in words is "one hundred sixty-six thousand, one hundred seventy".