Beautiful Sodium-Chloride crystal

Sodium chloride, also known as salt, common salt, table salt or halite, is an ionic compound with the formula $\ce{NaCl}$, representing equal proportions of sodium and chlorine. In chemistry, an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. In case of sodium chloride, the cation is $\ce{Na+}$ and the anion is $\ce{Cl-}$. In solid sodium chloride, how many $\ce{Na+}$ ions are surrounding one $\ce{Cl-}$ ion?