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: 1628
                                     DATED: DECEMBER 29, 1997
 
 
                           MERRILL LYNCH & CO., INC.
                          MEDIUM-TERM NOTES, SERIES B
                   DUE NINE MONTHS OR MORE FROM DATE OF ISSUE
                              FLOATING RATE NOTES
 
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<CAPTION>
 
<S>                       <C>
 
BASE RATE:                LIBOR
 
 
INDEX MATURITY:           Three Month
 
 
TRADE DATE:               December 29, 1997
 
 
SETTLEMENT DATE:          December 31, 1997
 
 
MATURITY DATE:            January 2, 2008
 
 
REDEMPTION DATE:          N/A
 
 
OPTIONAL REPAYMENT DATES: N/A
 
 
SPREAD:                   0.250%
                          (Plus twenty-five bps)
 
 
SPREAD MULTIPLIER:        N/A
 
 
COMMISSION:               0.4750%
 
 
MAXIMUM INTEREST RATE:    N/A
 
 
MINIMUM INTEREST RATE:    N/A
 
 
INTEREST RESET DATES:     Quarterly
 
 
INTEREST PAYMENT DATES:   March 31, June 30, September 30, and December 31 of each year,
                          commencing March 31, 1998 through and including September 30,
                          2007, and on the Maturity Date (long last coupon), subject to the modified
                          following business day convention.
 
 
INITIAL INTEREST RATE:    6.15625%
 
 
FORM:                     Book-entry
 
 
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