The term "LCD" typically refers to the "Least Common Denominator." However, if you're referring to a single number like 2345, it doesn't have a least common denominator on its own since LCD is used in the context of multiple fractions. If you meant "GCD" (Greatest Common Divisor) or something else, please clarify!
It is 1.
2345 + 2345 = 4690
No; 2345 is odd.
2345-3456 = -1111
2345
The factors of 2345 are: 1, 5, 7, 35, 67, 335, 469, 2345.
6790 + 2345 = 9135
2345 + 1234 = 3579
263 + 2345 = 2608
2345 + 4567 = 6912
567 + 2345 = 2912
It is: 567*2345 = 1,329,615