8072726689 has 2 divisors, whose sum is σ = 8072726690. Its totient is φ = 8072726688.

The previous prime is 8072726677. The next prime is 8072726699. The reversal of 8072726689 is 9866272708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5991998464 + 2080728225 = 77408^2 + 45615^2 .

It is a cyclic number.

It is not a de Polignac number, because 8072726689 - 2⁵ = 8072726657 is a prime.

It is not a weakly prime, because it can be changed into another prime (8072726609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4036363344 + 4036363345.

It is an arithmetic number, because the mean of its divisors is an integer number (4036363345).

Almost surely, 2^8072726689 is an apocalyptic number.

It is an amenable number.

8072726689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8072726689 is an equidigital number, since it uses as much as digits as its factorization.

8072726689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 8072726689 is about 89848.3538469125. The cubic root of 8072726689 is about 2006.0422844328.

It can be divided in two parts, 80727 and 26689, that added together give a triangular number (107416 = T₄₆₃).

The spelling of 8072726689 in words is "eight billion, seventy-two million, seven hundred twenty-six thousand, six hundred eighty-nine".