632

632 is a natural number that follows 631 and precedes 633. In mathematics, it factors as 2^3 × 79, making it an even composite. Its divisors are 1, 2, 4, 8, 79, 158, 316, and 632. It is not a prime, and it cannot be expressed as a sum of two squares because 79 is a prime congruent to 3 modulo 4 with odd exponent in the factorization. In numeral systems, 632 is written as DCXXXII in Roman numerals, 1001111000 in binary, 1170 in octal, and 278 in hexadecimal.

Year 632 CE is historically notable in the context of early Islam. It marks the death of the Prophet Muhammad and the accession of Abu Bakr as the first caliph, an event that led to the consolidation of the Rashidun Caliphate and the subsequent expansion of Muslim political and military influence, including the Ridda (apostasy) wars. Beyond this year, 632 appears primarily as a point of reference in discussions of number theory and calendar history, rather than as a distinct coordinate in other scientific or cultural systems.