422666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a Curzon number.
It is an unprimeable number.
422666 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2422666 is an apocalyptic number.
422666 is a wasteful number, since it uses less digits than its factorization.
422666 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 211335.
The square root of 422666 is about 650.1276797676. The cubic root of 422666 is about 75.0468448088.
The spelling of 422666 in words is "four hundred twenty-two thousand, six hundred sixty-six".