The number 690 is an integer that follows 689 and precedes 691. It is an even number, meaning it is divisible by 2 without a remainder. In terms of its prime factorization, 690 can be expressed as 2 × 3 × 5 × 23. This means it is made up of the prime numbers 2, 3, 5, and 23 multiplied together. In Roman numerals, 690 is represented as DCLX. The number can also be found in various contexts, such as in mathematics, where it may be used in calculations or as a reference point in sequences. Additionally, it can appear in everyday life, such as in addresses or numerical codes.