822197 has 2 divisors, whose sum is σ = 822198. Its totient is φ = 822196.

The previous prime is 822191. The next prime is 822221. The reversal of 822197 is 791228.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498436 + 323761 = 706^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 822197 - 2⁸ = 821941 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 822197.

It is not a weakly prime, because it can be changed into another prime (822191) 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, 411098 + 411099.

It is an arithmetic number, because the mean of its divisors is an integer number (411099).

2⁸²²¹⁹⁷ is an apocalyptic number.

It is an amenable number.

822197 is a deficient number, since it is larger than the sum of its proper divisors (1).

822197 is an equidigital number, since it uses as much as digits as its factorization.

822197 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 822197 is about 906.7507926658. The cubic root of 822197 is about 93.6825339791.

The spelling of 822197 in words is "eight hundred twenty-two thousand, one hundred ninety-seven".