TOKYO, July 31 (Reuters) - Japan's Seven & i Holdings ( SVNDF )

has formed a strategic partnership with SoftBank Corp ( SFTBF )

, PayPay ( PAYP ) and Sumitomo Mitsui Card, which will

each invest 100 billion yen ($620 million) into the 7-Eleven

operator, a filing showed on Friday.

Each of the three will acquire a 2.27% stake in Seven & I ( SVNDF ),

the filing showed.

The firms aim to integrate their customer information and

create a loyalty points ecosystem across Seven & i's ( SVNDF ) physical

stores and the other firms' online and financial customer bases,

the filing said.

($1 = 160.3900 yen)