8906788661 has 2 divisors, whose sum is σ = 8906788662. Its totient is φ = 8906788660.

The previous prime is 8906788603. The next prime is 8906788673. The reversal of 8906788661 is 1668876098.

8906788661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5789688100 + 3117100561 = 76090^2 + 55831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8906788661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8906788661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8906788691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4453394330 + 4453394331.

It is an arithmetic number, because the mean of its divisors is an integer number (4453394331).

Almost surely, 2^8906788661 is an apocalyptic number.

It is an amenable number.

8906788661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8906788661 is an equidigital number, since it uses as much as digits as its factorization.

8906788661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 8906788661 is about 94375.7842934298. The cubic root of 8906788661 is about 2072.8778738488.

The spelling of 8906788661 in words is "eight billion, nine hundred six million, seven hundred eighty-eight thousand, six hundred sixty-one".