1. Understanding the Divisions Needed:

   • To get 64 identical pieces, we need $4 \times 4 \times 4 = 64$ sections.
   • This means we divide the cube into 4 equal sections along each of the 3 dimensions.

2. Minimum Cuts Calculation:

   • For each dimension, 3 cuts are required to divide the cube into 4 sections.
   • Since there are 3 dimensions, we need 3 cuts per dimension.

   3 cuts $\times$ 3 dimensions = 9 cuts total

Therefore, the least possible number of cuts required to cut the cube into 64 identical pieces is 9.