80822681 has 8 divisors (see below), whose sum is σ = 83763720. Its totient is φ = 77891968.

The previous prime is 80822663. The next prime is 80822683. The reversal of 80822681 is 18622808.

It can be written as a sum of positive squares in 4 ways, for example, as 5480281 + 75342400 = 2341^2 + 8680^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80822681 is a prime.

It is a super-2 number, since 2×80822681² = 13064611528055522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80822683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15635 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (10470465).

Almost surely, 2^80822681 is an apocalyptic number.

It is an amenable number.

80822681 is a deficient number, since it is larger than the sum of its proper divisors (2941039).

80822681 is a wasteful number, since it uses less digits than its factorization.

80822681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 80822681 is about 8990.1435472411. The cubic root of 80822681 is about 432.3589141872.

The spelling of 80822681 in words is "eighty million, eight hundred twenty-two thousand, six hundred eighty-one".