875

Number
$875$ (eight hundred and seventy-five) is:
 * $2^3 \times 3^2 \times 11$


 * The $9$th tri-automorphic number after $2$, $5$, $7$, $67$, $75$, $92$, $667$, $792$:
 * $875^2 \times 3 = 2 \, 296 \, \mathbf {875}$