66 (number)

The number 66 is an integer that comes after 65 and before 67. In terms of numerical properties, it is an even number and can be factored into prime factors as \( 2 \times 3 \times 11 \). In mathematics, 66 is also significant in various contexts, such as: - It is the atomic number of dysprosium, a rare earth element. - In Roman numerals, it is represented as LXVI.