68517697 has 2 divisors, whose sum is σ = 68517698. Its totient is φ = 68517696.

The previous prime is 68517689. The next prime is 68517737. The reversal of 68517697 is 79671586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67174416 + 1343281 = 8196^2 + 1159^2 .

It is a cyclic number.

It is not a de Polignac number, because 68517697 - 2³ = 68517689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68517697.

It is not a weakly prime, because it can be changed into another prime (68517677) 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, 34258848 + 34258849.

It is an arithmetic number, because the mean of its divisors is an integer number (34258849).

Almost surely, 2^68517697 is an apocalyptic number.

It is an amenable number.

68517697 is a deficient number, since it is larger than the sum of its proper divisors (1).

68517697 is an equidigital number, since it uses as much as digits as its factorization.

68517697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 68517697 is about 8277.5417244494. The cubic root of 68517697 is about 409.1987066570.

The spelling of 68517697 in words is "sixty-eight million, five hundred seventeen thousand, six hundred ninety-seven".