Only 827?
You're just humble bragging.
Credit scores are a calculated risk of default by taking into account various factors in a person's financial activity and history.
The exact formulas for calculating credit scores vary among credit agencies, but are essentially;
35%: payment history and bankruptcy, liens, judgments, settlements, charge offs, repossessions, foreclosure
30%: debt burden: the debt to limit ratio, number of accounts with balances, amount owed across different types of accounts, and the amount paid down on installment loans.
15%: length/age of credit history; the average age of the accounts on your report and the age of the oldest account.
10%: types of credit used (installment, revolving, consumer finance, mortgage): Consumers can benefit by having a history of managing different types of credit.
10%: recent searches for credit: hard credit inquiries, which occur when consumers apply for a credit card or loan
I've also read that changing your address lowers your score.