2006

2006 = 2 x 17 x 59.

2006 is 2202022 in base 3. It is 434 in base 22.

2006 is a term in the sequence starting with 1, then adding 35, then repeatedly reversing the digits and adding 35 (A118632).

2006 is a multiple of 17 such that its reversal minus 1 (6001) is also a multiple of 17 (A166398).

2006 is the number of line segments connecting exactly 10 points in a 26 x 26 grid (A177726).

A transit of Mercury as seen from Earth took place in the year 2006 (A171466).

Source: On-Line Encyclopedia of Integer Sequences