FILE NO. 333-44173
                                                                  RULE 424(B)(3)
 
                             PROSPECTUS SUPPLEMENT
          (To Prospectus and Prospectus Supplement dated July 7, 1997)
                                     Prospectus number: 1646
 
 
                           MERRILL LYNCH & CO., INC.
                          MEDIUM-TERM NOTES, SERIES B
                   DUE NINE MONTHS OR MORE FROM DATE OF ISSUE
 
                                FIXED RATE NOTES
 
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<S>                          <C>
 
PRINCIPAL AMOUNT:            $30,000,000
 
 
CUSIP NUMBER:                59018S ZU1
 
 
INTEREST RATE:               5.56000%
 
 
ORIGINAL ISSUE DATE:         February 6, 1998
 
 
STATED MATURITY DATE:        February 8, 1999
 
 
INTEREST PAYMENT DATES:      Interest pays on the Stated Maturity Date, subject to Following Business Day
                             Convention.
 
 
REPAYMENT AT THE OPTION OF
THE HOLDERS:                 The Notes cannot be repaid prior to the Stated Maturity Date.
 
 
REDEMPTION AT THE OPTION OF
THE COMPANY:                 The Notes cannot be redeemed prior to the Stated Maturity Date.
 
 
FORM:                        The Notes are being issued in fully registered book-entry form.
 
 
TRUSTEE:                     The Chase Manhattan Bank
 
 
DATED:                       February 4, 1998
 
 
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