675

Number
$675$ (six hundred and seventy-five) is:
 * $3^3 \times 5^2$


 * The smaller of the $3$rd pair of consecutive powerful numbers:
 * $675 = 3^3 \times 5^2$, $676 = 2^2 \times 13^2$


 * The only known such pair whose first element is odd.


 * The $44$th powerful number after $1$, $4$, $8$, $9$, $16$, $25$, $\ldots$, $400$, $432$, $441$, $484$, $500$, $512$, $529$, $576$, $625$, $648$:
 * $675 = 3^3 \times 5^2$