1322681 has 2 divisors, whose sum is σ = 1322682. Its totient is φ = 1322680.

The previous prime is 1322669. The next prime is 1322689. The reversal of 1322681 is 1862231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 241081 = 1040^2 + 491^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322681 - 2¹⁰ = 1321657 is a prime.

It is a super-2 number, since 2×1322681² = 3498970055522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1322689) 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, 661340 + 661341.

It is an arithmetic number, because the mean of its divisors is an integer number (661341).

2^1322681 is an apocalyptic number.

It is an amenable number.

1322681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322681 is an equidigital number, since it uses as much as digits as its factorization.

1322681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 1322681 is about 1150.0786929597. The cubic root of 1322681 is about 109.7703473222.

The spelling of 1322681 in words is "one million, three hundred twenty-two thousand, six hundred eighty-one".