As Stan Tenen has noted, the 613 Commandments are divided into 365 negative Commandments and 248 positive Commandments.
The 365 correspond to the central number in the 27x27 Magic Square and the 9x9x9 Magic Cube.
The 248 correspond to the 248-dimensional Lie algebra E8, the 8-dimensional E8 lattice, and the (3,5) Torus Knot.
Toda Raba for the links!