80722 has 4 divisors (see below), whose sum is σ = 121086. Its totient is φ = 40360.

The previous prime is 80713. The next prime is 80737. The reversal of 80722 is 22708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47961 + 32761 = 219^2 + 181^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80722.

It is an unprimeable number.

80722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20179 + ... + 20182.

2⁸⁰⁷²² is an apocalyptic number.

80722 is a deficient number, since it is larger than the sum of its proper divisors (40364).

80722 is a wasteful number, since it uses less digits than its factorization.

80722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40363.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 80722 is about 284.1161734221. The cubic root of 80722 is about 43.2179309423.

The spelling of 80722 in words is "eighty thousand, seven hundred twenty-two".