The number "66" is an integer that follows 65 and precedes 67. It is an even number, meaning it is divisible by 2 without a remainder. In mathematics, 66 can be expressed as the product of its prime factors, which are 2 and 3 multiplied by 11, making it 2 × 3 × 11. In popular culture, Route 66 is a famous highway in the United States that symbolizes freedom and adventure. It stretches from Chicago to Santa Monica, covering a distance of about 2,448 miles. The highway has become an iconic representation of American road trips and nostalgia.