FILE NO. 333-44173
                                                                  RULE 424(B)(3)
 
                             PROSPECTUS SUPPLEMENT
(TO THE PROSPECTUS DATED JANUARY 29, 1998 AND PROSPECTUS SUPPLEMENT DATED MARCH
                                   12, 1998)
                                     PROSPECTUS NUMBER: 1685
 
 
                           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:        $20,000,000
 
 
CUSIP NUMBER:            59018S D92
 
 
INTEREST RATE:           6.41000%
 
 
ORIGINAL ISSUE DATE:     April 16, 1998
 
 
STATED MATURITY DATE:    April 16, 2008
 
 
INTEREST PAYMENT DATES:  Each April 16th and October 16th, commencing on October 16, 1998
                         through the Stated Maturity Date, subject to Following Business Day
                         Convention.
 
 
REPAYMENT AT THE OPTION
OF THE HOLDER:           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:                   April 13, 1998
 
 
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