6903

Number
$6903$ (six thousand, nine hundred and three) is:


 * $3^2 \times 13 \times 59$


 * The $59$th hexagonal number after $1$, $6$, $15$, $28$, $45$, $66$, $91$, $\ldots$, $5565$, $5778$, $5995$, $6216$, $6441$, $6670$:
 * $6903 = \displaystyle \sum_{k \mathop = 1}^{59} \left({4 k - 3}\right) = 59 \left({2 \times 59 - 1}\right)$