8628288661 has 2 divisors, whose sum is σ = 8628288662. Its totient is φ = 8628288660.

The previous prime is 8628288649. The next prime is 8628288737. The reversal of 8628288661 is 1668828268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6372988561 + 2255300100 = 79831^2 + 47490^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628288661 - 2¹⁷ = 8628157589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8628288611) 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, 4314144330 + 4314144331.

It is an arithmetic number, because the mean of its divisors is an integer number (4314144331).

Almost surely, 2^8628288661 is an apocalyptic number.

It is an amenable number.

8628288661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8628288661 is an equidigital number, since it uses as much as digits as its factorization.

8628288661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3538944, while the sum is 55.

The square root of 8628288661 is about 92888.5819732436. The cubic root of 8628288661 is about 2051.0435821631.

The spelling of 8628288661 in words is "eight billion, six hundred twenty-eight million, two hundred eighty-eight thousand, six hundred sixty-one".