822406 has 16 divisors (see below), whose sum is σ = 1358784. Its totient is φ = 370944.

The previous prime is 822391. The next prime is 822407. The reversal of 822406 is 604228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (84924).

2⁸²²⁴⁰⁶ is an apocalyptic number.

822406 is a deficient number, since it is larger than the sum of its proper divisors (536378).

822406 is a wasteful number, since it uses less digits than its factorization.

822406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735.

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

The square root of 822406 is about 906.8660320025. The cubic root of 822406 is about 93.6904712459.

The spelling of 822406 in words is "eight hundred twenty-two thousand, four hundred six".