66 (number)
66 is the natural number following 65 and preceding 67.
In mathematics
66 is a sphenic number, a semiperfect number, and a Erdős–Woods number. It is also the 11th triangular number and the 6th hexagonal number.In computing
66 megahertz is a common divisor for the front side bus speed, overall central processing unit speed, and base bus speed. On a Core 2 CPU, and a Core 2 motherboard, the FSB is 1066 MHz, the memory speed is usually 666.67 MHz, and the processor speed ranges from 1.86 gigahertz to 2.93 GHz, in 266 MHz increments.In motor vehicle transportation
Image:Route66 [sign.jpg|thumb|Route 66 sign]- The designation of the historic U.S. Route 66, dubbed the "Mother Road" by novelist John Steinbeck, and other roads.