822791 has 2 divisors, whose sum is σ = 822792. Its totient is φ = 822790.

The previous prime is 822781. The next prime is 822793. The reversal of 822791 is 197228.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 822791 - 2⁶ = 822727 is a prime.

Together with 822793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411395 + 411396.

It is an arithmetic number, because the mean of its divisors is an integer number (411396).

2⁸²²⁷⁹¹ is an apocalyptic number.

822791 is a deficient number, since it is larger than the sum of its proper divisors (1).

822791 is an equidigital number, since it uses as much as digits as its factorization.

822791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 822791 is about 907.0782766664. The cubic root of 822791 is about 93.7050890073.

The spelling of 822791 in words is "eight hundred twenty-two thousand, seven hundred ninety-one".