It is a happy number.
166679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-166679 is a prime.
It is a Chen prime.
It is a plaindrome in base 10 and base 15.
It is a congruent number.
2166679 is an apocalyptic number.
166679 is an equidigital number, since it uses as much as digits as its factorization.
166679 is an odious number, because the sum of its binary digits is odd.
The square root of 166679 is about 408.2633953712. The cubic root of 166679 is about 55.0334782404.
The spelling of 166679 in words is "one hundred sixty-six thousand, six hundred seventy-nine".