360

360 is the integer that follows 359 and precedes 361. In decimal notation it is written as 360, and its prime factorization is 2^3 × 3^2 × 5. The name combines the words for three hundred and sixty, and in Roman numerals it is CCCLX.

In geometry and measurement, 360 degrees make up a full circle. A degree is 1/360 of a circle; radians relate by 2π radians equaling 360 degrees, and 180 degrees equaling π radians. The division of a circle into 360 parts has historical roots in ancient astronomical and mathematical traditions and is widely used in navigation, surveying, and trigonometry.

Historically, the convention of a 360-degree circle traces to ancient Mesopotamia and the sexagesimal (base-60) system. The circle’s 360-degree scheme was transmitted through Greek, Persian, and Islamic scholars and became standard in many scientific and practical disciplines.

In modern usage, 360 appears in various technical and cultural contexts. It is central to 360-degree video and virtual reality, where imagery captures a spherical view. It also appears in the concept of 360-degree feedback in management, a performance appraisal method that collects input from multiple sources around a person. Beyond technical terms, 360 is used in branding and marketing as a shorthand for completeness and comprehensiveness.