Suppose N=\underline{a}\ \underline{b}\ \underline{c}\ \underline{d} is a 4-digit number with digits a, b, c and d, such that N= a \cdot b \cdot c \cdot d^{7}. Find N.
Suppose N=\underline{a}\ \underline{b}\ \underline{c}\ \underline{d} is a 4-digit number with digits a, b, c and d, such that N= a \cdot b \cdot c \cdot d^{7}. Find N.