\[\boxed{\mathbf{591}.\ }\]
\[n = 3a + r_{1};\ \ 0 \leq r_{1} < 3;\]
\[n = 6b + r_{2};\ \ 0 \leq r_{2} < 6;\]
\[n = 9c + r_{3};\ \ 0 \leq r_{3} < 9.\]
\[r_{1} + r_{2} + r_{3} = 15:\]
\[r_{1} = 2;\ \ r_{2} = 5;\ \ r_{3} = 8.\]
\[Ответ:2,\ 5,\ 8.\]