Image file size discrepancy

[Rosie2320733839jw]

Hi guys, 

I have a question regarding photoshop. I have an image file on my desktop which is 2,617KB, when I look at the file info. However when I open it in photoshop, it says the Image Size is 69.3M (Resolution 300ppi, Width 39.24cm, Height 45.41cm). How can there be such a discrepency between the size of the file on my desktop and the size of it in photoshop? Veyr grateful for your advice! 

Thanks

RK

[josantgomez]

https://helpx.adobe.com/es/photoshop/using/image-size-resolution.html#file-size

Ahí puedes ver un acercamiento al tamaño de archivo y sus variables. 

¿Dón ves el tamaño del archivo? ¿En Windows, explorador, propiedades?