1296817 has 2 divisors, whose sum is σ = 1296818. Its totient is φ = 1296816.

The previous prime is 1296803. The next prime is 1296829. The reversal of 1296817 is 7186921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772641 + 524176 = 879^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296817 - 2⁷ = 1296689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1296877) 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, 648408 + 648409.

It is an arithmetic number, because the mean of its divisors is an integer number (648409).

2^1296817 is an apocalyptic number.

It is an amenable number.

1296817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296817 is an equidigital number, since it uses as much as digits as its factorization.

1296817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 1296817 is about 1138.7787318000. The cubic root of 1296817 is about 109.0501410587.

The spelling of 1296817 in words is "one million, two hundred ninety-six thousand, eight hundred seventeen".