804 = 2 x 2 x 3 x 67.
804 is a 14-gonal (tetradecagonal) number (A051866).
Each of 804, 805, and 806 has three distinct prime factors (A140077).
804 is the number of linear arrangements of four blue, four red, and four green items such that there are no adjacent items of the same color (first and last elements considered as adjacent) (A110707).
Source: On-Line Encyclopedia of Integer Sequences