1764

Number
$1764$ (one thousand seven hundred and sixty-four) is:


 * $2^2 \times 3^2 \times 7^2$


 * The $42$nd square number after $1, 4, 9, 16, 25, 36, \ldots, 625, 676, 729, 784, 841, 900, 961, 1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681$:
 * $1764 = 42 \times 42$