1322287 has 2 divisors, whose sum is σ = 1322288. Its totient is φ = 1322286.

The previous prime is 1322281. The next prime is 1322303. The reversal of 1322287 is 7822231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1322287 - 2⁷ = 1322159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322281) 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, 661143 + 661144.

It is an arithmetic number, because the mean of its divisors is an integer number (661144).

2^1322287 is an apocalyptic number.

1322287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322287 is an equidigital number, since it uses as much as digits as its factorization.

1322287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 1322287 is about 1149.9073875752. The cubic root of 1322287 is about 109.7594467821.

The spelling of 1322287 in words is "one million, three hundred twenty-two thousand, two hundred eighty-seven".