422806 has 4 divisors (see below), whose sum is σ = 634212. Its totient is φ = 211402.

The previous prime is 422803. The next prime is 422827. The reversal of 422806 is 608224.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422803) 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, 105700 + ... + 105703.

It is an arithmetic number, because the mean of its divisors is an integer number (158553).

2⁴²²⁸⁰⁶ is an apocalyptic number.

422806 is a deficient number, since it is larger than the sum of its proper divisors (211406).

422806 is a wasteful number, since it uses less digits than its factorization.

422806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211405.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 422806 is about 650.2353420109. The cubic root of 422806 is about 75.0551298365.

The spelling of 422806 in words is "four hundred twenty-two thousand, eight hundred six".