1317817 has 2 divisors, whose sum is σ = 1317818. Its totient is φ = 1317816.

The previous prime is 1317793. The next prime is 1317839. The reversal of 1317817 is 7187131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 72361 = 1116^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317817 - 2¹⁵ = 1285049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1317887) 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, 658908 + 658909.

It is an arithmetic number, because the mean of its divisors is an integer number (658909).

2^1317817 is an apocalyptic number.

It is an amenable number.

1317817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317817 is an equidigital number, since it uses as much as digits as its factorization.

1317817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 28.

The square root of 1317817 is about 1147.9621073886. The cubic root of 1317817 is about 109.6356263051.

The spelling of 1317817 in words is "one million, three hundred seventeen thousand, eight hundred seventeen".