8276790721 has 2 divisors, whose sum is σ = 8276790722. Its totient is φ = 8276790720.

The previous prime is 8276790703. The next prime is 8276790749. The reversal of 8276790721 is 1270976728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7033170496 + 1243620225 = 83864^2 + 35265^2 .

It is a cyclic number.

It is not a de Polignac number, because 8276790721 - 2⁵ = 8276790689 is a prime.

It is not a weakly prime, because it can be changed into another prime (8276740721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4138395360 + 4138395361.

It is an arithmetic number, because the mean of its divisors is an integer number (4138395361).

Almost surely, 2^8276790721 is an apocalyptic number.

It is an amenable number.

8276790721 is a deficient number, since it is larger than the sum of its proper divisors (1).

8276790721 is an equidigital number, since it uses as much as digits as its factorization.

8276790721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 8276790721 is about 90976.8691536481. The cubic root of 8276790721 is about 2022.8048739492.

The spelling of 8276790721 in words is "eight billion, two hundred seventy-six million, seven hundred ninety thousand, seven hundred twenty-one".