66 (sixty-six) is the
natural number
In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positive in ...
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 (more specifically 66.667) megahertz (MHz) is a common divisor for the
front side bus (FSB) speed, overall
central processing unit
A central processing unit (CPU), also called a central processor, main processor, or just processor, is the primary Processor (computing), processor in a given computer. Its electronic circuitry executes Instruction (computing), instructions ...
(CPU) speed, and base bus speed. On a Core 2 CPU, and a Core 2
motherboard
A motherboard, also called a mainboard, a system board, a logic board, and informally a mobo (see #Nomenclature, "Nomenclature" section), is the main printed circuit board (PCB) in general-purpose computers and other expandable systems. It ho ...
, the FSB is 1066 MHz (~16 × 66 MHz), the memory speed is usually 666.67 MHz (~10 × 66 MHz), and the processor speed ranges from 1.86 gigahertz (GHz) (~66 MHz × 28) to 2.93 GHz (~66 MHz × 44), in 266 MHz (~66 MHz × 4) increments.
In motor vehicle transportation
*The designation of the historic
U.S. Route 66, dubbed the "Mother Road" by novelist
John Steinbeck, and
other roads.
References
External links
*
Integers
{{Num-stub