68113517 has 2 divisors, whose sum is σ = 68113518. Its totient is φ = 68113516.

The previous prime is 68113483. The next prime is 68113519. The reversal of 68113517 is 71531186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60435076 + 7678441 = 7774^2 + 2771^2 .

It is a cyclic number.

It is not a de Polignac number, because 68113517 - 2⁸ = 68113261 is a prime.

Together with 68113519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68113519) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34056758 + 34056759.

It is an arithmetic number, because the mean of its divisors is an integer number (34056759).

Almost surely, 2^68113517 is an apocalyptic number.

It is an amenable number.

68113517 is a deficient number, since it is larger than the sum of its proper divisors (1).

68113517 is an equidigital number, since it uses as much as digits as its factorization.

68113517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 68113517 is about 8253.0913602116. The cubic root of 68113517 is about 408.3925100223.

The spelling of 68113517 in words is "sixty-eight million, one hundred thirteen thousand, five hundred seventeen".