712

712 is a natural number that follows 711 and precedes 713. It is an even, composite number with prime factorization 2^3 × 89.

Its divisors are 1, 2, 4, 8, 89, 178, 356, and 712. The sum of its proper divisors is 638, so 712 is a deficient number. Euler's totient function gives φ(712) = 352. In base representations, 712 is 1011001000 in binary, 0x2C8 in hexadecimal, and DCCXII in Roman numerals.

In telecommunications, 712 is an area code for western Iowa in the North American Numbering Plan. It was introduced in 1947 as part of the original numbering plan.

Historically, the year 712 CE lies in the early medieval period, a time of significant political and cultural change in parts of Europe and the wider Afro-Eurasian world. This era saw ongoing movements such as the expansion of the Islamic caliphates into the Iberian Peninsula and various developments across competing kingdoms in Europe and Asia.