278,886

Number
$278 \, 886$ (two hundred and seventy-eight thousand, eight hundred and eighty-six) is:
 * $2 \times 3 \times 53 \times 877$


 * Has a square which starts with a remarkably long string of $7$s:
 * $278 \, 886^2 = 77 \, 777 \, 400 \, 996$