Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_62886 ( "Constituency number" text, "Name" text, "Reserved for ( SC / ST /None)" text, "District" text, "Number of electorates (2009)" real )

### Question ###
What's the number of electorates for constituency number 56?

### Accurate SQL ###

SELECT SUM("Number of electorates (2009)") FROM table_62886 WHERE "Constituency number" = '56'