68085617 has 2 divisors, whose sum is σ = 68085618. Its totient is φ = 68085616.

The previous prime is 68085599. The next prime is 68085631. The reversal of 68085617 is 71658086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56190016 + 11895601 = 7496^2 + 3449^2 .

It is a cyclic number.

It is not a de Polignac number, because 68085617 - 2¹⁰ = 68084593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68085317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34042808 + 34042809.

It is an arithmetic number, because the mean of its divisors is an integer number (34042809).

Almost surely, 2^68085617 is an apocalyptic number.

It is an amenable number.

68085617 is a deficient number, since it is larger than the sum of its proper divisors (1).

68085617 is an equidigital number, since it uses as much as digits as its factorization.

68085617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 68085617 is about 8251.4009113604. The cubic root of 68085617 is about 408.3367418106.

The spelling of 68085617 in words is "sixty-eight million, eighty-five thousand, six hundred seventeen".