Select Accounts at the bottom of the screen.
Tap the relevant account, then select Details.
Here you'll find your member number (along with share ID), SELCO's routing number, and your full account number. Your full account number, listed under the "Account Number for ACH/Direct Deposit" heading, will be the one you'll use when setting up direct deposit or making ACH transfers.
You can also find the routing number by tapping Menu then scrolling to the bottom of the page.