7698862081 has 2 divisors, whose sum is σ = 7698862082. Its totient is φ = 7698862080.

The previous prime is 7698862079. The next prime is 7698862103. The reversal of 7698862081 is 1802688967.

7698862081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7631769600 + 67092481 = 87360^2 + 8191^2 .

It is a cyclic number.

It is not a de Polignac number, because 7698862081 - 2¹ = 7698862079 is a prime.

It is a super-2 number, since 2×7698862081² (a number of 21 digits) contains 22 as substring.

Together with 7698862079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7698862021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3849431040 + 3849431041.

It is an arithmetic number, because the mean of its divisors is an integer number (3849431041).

Almost surely, 2^7698862081 is an apocalyptic number.

It is an amenable number.

7698862081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7698862081 is an equidigital number, since it uses as much as digits as its factorization.

7698862081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 7698862081 is about 87743.1597390931. The cubic root of 7698862081 is about 1974.5835435316.

The spelling of 7698862081 in words is "seven billion, six hundred ninety-eight million, eight hundred sixty-two thousand, eighty-one".