165 (one hundred [and] sixty-five) is the natural number following 164 and preceding 166. In mathematics 165 is: an odd number, a composite number, and a deficient number. a sphenic number. a tetrahedral number the sum of the sums of the divisors of the first 14 positive integers. a self number in base 10. a palindromic number in binary (101001012) and bases 14 (BB14), 32 (5532) and 54 (3354). a unique period in base 2. In astronomy 165 Loreley is a large Main belt asteroid 165P/LINEAR is a periodic comet in the Solar System The planet Neptune takes about 165 years to orbit the Sun. In the military Caproni Ca.165 Italian fighter aircraft developed before World War II was a United States Navy tanker, part of the U.S. Reserve Fleet, Beaumont, Texas was a United States Navy Barracuda-class submarine during World War II was a United States Navy during World War II was a United States Navy during World War II USS Counsel (AM-165) was a United States Navy during World War II was a United States Navy minesweeper during World War II was a United States Navy Oxford-class technical research ship following World War II was a United States Navy during World War I was a United States Navy during World War II was a United States Navy transport and cargo ship during World War II was a United States Navy yacht during World War I The 165 Squadron, Republic of Singapore Air Force Air Defence Operations Command, Republic of Singapore Air Force In transportation British Rail Class 165 The Blériot 165 was a French four-engine biplane airliner of the early 1920s The Cessna 165 single-engine plane of the 1930s LOT Polish Airlines Flight 165, en route from Warsaw to Cracow Balice airport crashed during a snowstorm on April 2, 1969 In other fields 165 is also: The year AD 165 or 165 BC 165 AH is a year in the Islamic calendar that corresponds to 781 – 782 CE The atomic number of an element temporarily called Unhexpentium G.165 is a Telecommunication Standardization Sector standard for echo cancellers, used in telephony The human gene Zinc finger protein 165, or ZNF165 See also List of highways numbered 165 United States Supreme Court cases, Volume 165 United Nations Security Council Resolution 165 Pennsylvania House of Representatives, District 165 U.S. Income Tax sections 165(d) Professional Gamblers and 165(d) Recreational Gamblers References