166996170 has 192 divisors, whose sum is σ = 501935616. Its totient is φ = 38154240.

The previous prime is 166996153. The next prime is 166996171. The reversal of 166996170 is 71699661.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (166996171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1721562 + ... + 1721658.

It is an arithmetic number, because the mean of its divisors is an integer number (2614248).

Almost surely, 2^166996170 is an apocalyptic number.

166996170 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 166996170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250967808).

166996170 is an abundant number, since it is smaller than the sum of its proper divisors (334939446).

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

166996170 is a wasteful number, since it uses less digits than its factorization.

166996170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 166996170 is about 12922.6997953214. The cubic root of 166996170 is about 550.6836347574.

The spelling of 166996170 in words is "one hundred sixty-six million, nine hundred ninety-six thousand, one hundred seventy".