166388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a plaindrome in base 14 and base 15.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166388.
It is an unprimeable number.
166388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2166388 is an apocalyptic number.
It is an amenable number.
166388 is a wasteful number, since it uses less digits than its factorization.
166388 is an odious number, because the sum of its binary digits is odd.
The square root of 166388 is about 407.9068521121. The cubic root of 166388 is about 55.0014324696.
The spelling of 166388 in words is "one hundred sixty-six thousand, three hundred eighty-eight".