Yes
Yes, it's 392.
No, not evenly.
No it is not. A prime number is only divisible by 1 and itself, whereas 784 is at least divisible by the number 2 as well. 784/2=392
246, 392, and 562
No, you can tell by the last digit being divisible by two, that the number is divisible by two. Thus it's composite.
1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
196
Oh, dude, 784 is totally divisible! It can be divided by 1, 2, 4, 7, 14, 28, 56, 112, 392, and of course, itself. So yeah, if you're looking to divide 784, you've got plenty of options. Like, it's not a high-pressure situation or anything.
2 × 2 × 2 × 7 × 7
There are six factor pairs: 392 = 1 x 392 392 = 2 x 196 392 = 4 x 98 392 = 7 x 56 392 = 8 x 49 392 = 14 x 28
392 = 2 x 2 x 2 x 7 x 7.