68317057 has 2 divisors, whose sum is σ = 68317058. Its totient is φ = 68317056.

The previous prime is 68317043. The next prime is 68317063. The reversal of 68317057 is 75071386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54745201 + 13571856 = 7399^2 + 3684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68317057 is a prime.

It is not a weakly prime, because it can be changed into another prime (68317037) 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, 34158528 + 34158529.

It is an arithmetic number, because the mean of its divisors is an integer number (34158529).

Almost surely, 2^68317057 is an apocalyptic number.

It is an amenable number.

68317057 is a deficient number, since it is larger than the sum of its proper divisors (1).

68317057 is an equidigital number, since it uses as much as digits as its factorization.

68317057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 68317057 is about 8265.4132988012. The cubic root of 68317057 is about 408.7988980334.

The spelling of 68317057 in words is "sixty-eight million, three hundred seventeen thousand, fifty-seven".