Apple A7 processor specifications?

On the iPhone 5S It's a 1.7 Ghz processor. Is it dual core or quad core? How much ram does it have?
And what does the 64 bit feature do to make it faster or better?

Is it dual core or quad core?
Only dual core

How much ram does it have?
The rumor is it has 1GB, maybe 2GB.

And what does the 64 bit feature do to make it faster or better?
64 bit allows you to use over 4GB or RAM… So it doesn't really do much.

It is dual core.

64 bit processor has to do with how much information the processor can handle at once. 64 is currently double the amount that every other smartphone has. It literally means that the phone can handle data in 64 bit packages instead of 32 bit packages. It will NOT mean double speed it just means that it will be fast. It will also allow you to utilize a large amount of RAM (4 gigs plus) but since the 5s will only be coming with 1 (MAYBE 2) it won't really affect that much. In terms of your question, the 64 bit processor will handle double the information that the current processors can at the same time.