664.87 centimeters is equivalent to 261.8 inches.
This is approximately the height of a standard regulation basketball hoop (10 feet or 120 inches) plus the length of a standard basketball (9.4 inches), which adds up to 129.4 inches.
It is also close in size to the length of a queen-sized bed (80 inches) plus the length of a standard pillow (20 inches), which adds up to 100 inches.
Additionally, 664.87 centimeters is slightly longer than the width of a standard single mattress (39 inches) and slightly shorter than the width of a twin mattress (39 inches).