166644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a nude number because it is divisible by every one of its digits.
It is a plaindrome in base 15.
It is a congruent number.
2166644 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
166644 is a wasteful number, since it uses less digits than its factorization.
166644 is an odious number, because the sum of its binary digits is odd.
The square root of 166644 is about 408.2205286362. The cubic root of 166644 is about 55.0296259123.
The spelling of 166644 in words is "one hundred sixty-six thousand, six hundred forty-four".