317763661 has 2 divisors, whose sum is σ = 317763662. Its totient is φ = 317763660.

The previous prime is 317763629. The next prime is 317763683. The reversal of 317763661 is 166367713.

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., 167210761 + 150552900 = 12931^2 + 12270^2 .

It is a cyclic number.

It is not a de Polignac number, because 317763661 - 2⁵ = 317763629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317764661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158881830 + 158881831.

It is an arithmetic number, because the mean of its divisors is an integer number (158881831).

Almost surely, 2^317763661 is an apocalyptic number.

It is an amenable number.

317763661 is a deficient number, since it is larger than the sum of its proper divisors (1).

317763661 is an equidigital number, since it uses as much as digits as its factorization.

317763661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 317763661 is about 17825.9266519303. The cubic root of 317763661 is about 682.3932832827.

The spelling of 317763661 in words is "three hundred seventeen million, seven hundred sixty-three thousand, six hundred sixty-one".