675

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


Also see


Sources