What is meant by "Al-Hawamim" in the Holy Quran, and how many of them are there?

The Hawamim are the seven surahs that begin with "Ha-Mim." They are consecutive in the Mushaf (Qur'an) and arranged according to their order of revelation. They are also called "Al Ha-Mim." They begin with Surah Ghafir: "Ha-Mim. The revelation of the Book is from Allah, the Exalted in Might, the All-Knowing. Forgiver of sin, acceptor of repentance," and end with Surah Al-Ahqaf: "Ha-Mim. The revelation of the Book is from Allah, the Exalted in Might, the Wise. We did not create the heavens and the earth and what is between them except in truth."