SSH can't connect

[Jim]

  What is the 6749 in this command ?


# netstat -nltp | grep 22
tcp        0      0 0.0.0.0:22                  
0.0.0.0:*                   LISTEN      6749/sshd
tcp        0      0 0.0.0.0:8822                
0.0.0.0:*                   LISTEN      1666/smfpd
tcp        0      0 :::22                       
:::*                        LISTEN      6749/sshd