422668 has 6 divisors (see below), whose sum is σ = 739676. Its totient is φ = 211332.

The previous prime is 422657. The next prime is 422689. The reversal of 422668 is 866224.

It is a zygodrome in base 2.

It is an unprimeable number.

422668 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 as a sum of consecutive naturals, namely, 52830 + ... + 52837.

2⁴²²⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

422668 is a deficient number, since it is larger than the sum of its proper divisors (317008).

422668 is a wasteful number, since it uses less digits than its factorization.

422668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105671 (or 105669 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 422668 is about 650.1292179252. The cubic root of 422668 is about 75.0469631793.

Subtracting 422668 from its reverse (866224), we obtain a square (443556 = 666²).

The spelling of 422668 in words is "four hundred twenty-two thousand, six hundred sixty-eight".