FILE NO. 333-28537 RULE 424(B)(3) PROSPECTUS SUPPLEMENT (TO PROSPECTUS DATED JULY 7, 1997) (TO PROSPECTUS SUPPLEMENT DATED JULY 7, 1997) PROSPECTUS NUMBER: 1625 DATED: DECEMBER 16, 1997 MERRILL LYNCH & CO., INC. MEDIUM-TERM NOTES, SERIES B DUE NINE MONTHS OR MORE FROM DATE OF ISSUE FLOATING RATE NOTES
BASE RATE: Fed Funds (Prior Day H.15) INDEX MATURITY: One Day TRADE DATE: December 16, 1997 SETTLEMENT DATE: December 19, 1997 MATURITY DATE: December 20, 1999 REDEMPTION DATE: N/A OPTIONAL REPAYMENT DATES: N/A SPREAD: 0.230% (plus twenty three bps) COMMISSION: 0.175% SPREAD MULTIPLIER: N/A MAXIMUM INTEREST RATE: N/A MINIMUM INTEREST RATE: N/A INTEREST RESET DATES: Daily INTEREST PAYMENT DATES: The 20th of March, June, September and December commencing March 1998 through Maturity, subject to Following Business Day Convention. INITIAL INTEREST RATE: TBD, December 19, 1997 FORM: Book-entry