I received 2 calls from this number yesterday, 10-29-2013. This is obviously a bogus number - 626 is a valid area code for where I live. But 198-7659 is not a valid telephone number...
Based on that, I'm going to assume the caller is using Caller ID spoofing - therefore it's likely some kind of a scam. Why else would the caller use Caller ID spoofing??? And I'll go a step further and say it's likely a robo calling device - though saying that is pure speculation on my part...
If ever you connect with a live person, do not under any circumstances give them any personal information - period! No matter how hard they try to press for that - assume it's a scam and treat it accordingly...
Better yet, just don't answer the phone if you see a number like this, or a number you don't recognize...
And if you don't have Caller ID, then get it - it will pay for itself...