822218 has 8 divisors (see below), whose sum is σ = 1259712. Its totient is φ = 402316.

The previous prime is 822197. The next prime is 822221. The reversal of 822218 is 812228.

822218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 822193 and 822202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4280 + ... + 4467.

It is an arithmetic number, because the mean of its divisors is an integer number (157464).

2⁸²²²¹⁸ is an apocalyptic number.

822218 is a deficient number, since it is larger than the sum of its proper divisors (437494).

822218 is a wasteful number, since it uses less digits than its factorization.

822218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796.

The product of its digits is 512, while the sum is 23.

The square root of 822218 is about 906.7623723997. The cubic root of 822218 is about 93.6833315643.

The spelling of 822218 in words is "eight hundred twenty-two thousand, two hundred eighteen".