166386 has 16 divisors (see below), whose sum is σ = 363168. Its totient is φ = 50400.

The previous prime is 166363. The next prime is 166393. The reversal of 166386 is 683661.

166386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

166386 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 7 ways as a sum of consecutive naturals, for example, 1195 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (22698).

2¹⁶⁶³⁸⁶ is an apocalyptic number.

166386 is an abundant number, since it is smaller than the sum of its proper divisors (196782).

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

166386 is a wasteful number, since it uses less digits than its factorization.

166386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537.

The product of its digits is 5184, while the sum is 30.

The square root of 166386 is about 407.9044005646. The cubic root of 166386 is about 55.0012120945.

The spelling of 166386 in words is "one hundred sixty-six thousand, three hundred eighty-six".