76 (number)
Seventy-six (76) is the natural number following 75 and preceding 77.
Mathematics
- 76 is a composite number, its proper divisors being 1, 2, 4, 19, and 38.
- 76 is an even number.
- 76 is a deficient number, as the sum of its proper divisors (64) is less than itself.
- 76 can be expressed as the sum of two squares: 76 = 22 + (6√2)2, or with integers, 76 = 22 + (√72)2 but it is not the sum of two integer squares.
- In base 10, 76 is a Harshad number as it is divisible by the sum of its digits (7 + 6 = 13, and 76 is not divisible by 13).
In Other Fields
- In the United States, "76" is a historical reference, often associated with the year 1776, the year of the Declaration of Independence. The phrase "Spirit of '76" refers to the patriotism and ideals of the American Revolution.
- The atomic number of osmium is 76.
- Interstate 76 (I-76) is the designation for several Interstate Highways in the United States.
- 76 is a brand of gasoline sold by Phillips 66.