422866 has 4 divisors (see below), whose sum is σ = 634302. Its totient is φ = 211432.

The previous prime is 422861. The next prime is 422867. The reversal of 422866 is 668224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 27225 = 629^2 + 165^2 .

It is not an unprimeable number, because it can be changed into a prime (422861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105715 + ... + 105718.

2⁴²²⁸⁶⁶ is an apocalyptic number.

422866 is a deficient number, since it is larger than the sum of its proper divisors (211436).

422866 is a wasteful number, since it uses less digits than its factorization.

422866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211435.

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

The square root of 422866 is about 650.2814775157. The cubic root of 422866 is about 75.0586800027.

The spelling of 422866 in words is "four hundred twenty-two thousand, eight hundred sixty-six".