317767649 has 2 divisors, whose sum is σ = 317767650. Its totient is φ = 317767648.

The previous prime is 317767643. The next prime is 317767651. The reversal of 317767649 is 946767713.

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., 301647424 + 16120225 = 17368^2 + 4015^2 .

It is an emirp because it is prime and its reverse (946767713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317767649 - 2⁴ = 317767633 is a prime.

Together with 317767651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 317767597 and 317767606.

It is not a weakly prime, because it can be changed into another prime (317767643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158883824 + 158883825.

It is an arithmetic number, because the mean of its divisors is an integer number (158883825).

Almost surely, 2^317767649 is an apocalyptic number.

It is an amenable number.

317767649 is a deficient number, since it is larger than the sum of its proper divisors (1).

317767649 is an equidigital number, since it uses as much as digits as its factorization.

317767649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 317767649 is about 17826.0385111219. The cubic root of 317767649 is about 682.3961379966.

The spelling of 317767649 in words is "three hundred seventeen million, seven hundred sixty-seven thousand, six hundred forty-nine".