822207 has 4 divisors (see below), whose sum is σ = 1096280. Its totient is φ = 548136.

The previous prime is 822197. The next prime is 822221. The reversal of 822207 is 702228.

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

It is not a de Polignac number, because 822207 - 2⁴ = 822191 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137032 + ... + 137037.

It is an arithmetic number, because the mean of its divisors is an integer number (274070).

2⁸²²²⁰⁷ is an apocalyptic number.

822207 is a deficient number, since it is larger than the sum of its proper divisors (274073).

822207 is a wasteful number, since it uses less digits than its factorization.

822207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274072.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 822207 is about 906.7563068432. The cubic root of 822207 is about 93.6829137833.

Adding to 822207 its sum of digits (21), we get a palindrome (822228).

The spelling of 822207 in words is "eight hundred twenty-two thousand, two hundred seven".