4995

Number
$4995$ (four thousand, nine hundred and ninety-five) is:
 * $3^3 \times 5 \times 37$


 * The $45$th heptagonal number after $1, 7, 18, 34, 55, 81, 112, \ldots, 3010, 3186, 3367, 3553, 3744, 3940, 4141, 4347, 4558, 4774$:
 * $4995 = \displaystyle \sum_{k \mathop = 1}^{45} \left({5 k - 4}\right) = \dfrac {45 \left({5 \times 45 - 3}\right)} 2$