The number 68, and it's mirror 86, have not been investigated very much, though they do have some interesting connections to other symbols. The Tree of Life symbol has at it's center the sixth sphere, which happens to have eight paths radiating away from the center. The connection between six and eight can also be seen in the shape of the Cube which has eight vertices and six faces.
The Number 68 in Popular cultureEditIn televisions South Park, Eric Cartman wears football jersey number 68.
Lucky 68 - The Stygian Port