770 is not prime; however, it can be written as a productof primes:770 = 2*5*7*11.
No, they are not relatively prime.
No.
770 = 2 x 5 x 7 x 11
770 = 2 x 5 x 7 x 11
770 = 2 x 5 x 7 x 11
Yes.
At first glance one can tell that 770 is divisible by 10 so it is composite.
2 x 5 x 7 x 11 = 770
770 = 2 x 5 x 7 x 11
Yes, they are.
Yes they are.