Cell Format in xlswrite

I am writing a cell array to excel using xlswrite. There are some cells that has strings similar to this one :33741E10 when I write the file to excel, the excel cell shows the respective 3.37e+14 number (i.e 337410000000000),which is totally wrong since the string should maintain its original content (33741E10) . Any help is appreciated

[wesso Dadoyan]

I have just discovered another type of errors: if the cell is 0456781 then the zero disappears when i write to excel although it is much needed.