594

Number
$594$ (five hundred and ninety-four) is:


 * $2 \times 3^3 \times 11$


 * The $7$th positive integer after $1$, $24$, $26$, $87$, $168$, $388$ whose Euler $\phi$ value is equal to the product of its digits:
 * $\map \phi {594} = 180 = 5 \times 9 \times 4$