8086878661 has 2 divisors, whose sum is σ = 8086878662. Its totient is φ = 8086878660.

The previous prime is 8086878587. The next prime is 8086878671. The reversal of 8086878661 is 1668786808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7107501636 + 979377025 = 84306^2 + 31295^2 .

It is a cyclic number.

It is not a de Polignac number, because 8086878661 - 2¹⁷ = 8086747589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8086878596 and 8086878605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8086878671) 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, 4043439330 + 4043439331.

It is an arithmetic number, because the mean of its divisors is an integer number (4043439331).

Almost surely, 2^8086878661 is an apocalyptic number.

It is an amenable number.

8086878661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8086878661 is an equidigital number, since it uses as much as digits as its factorization.

8086878661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The square root of 8086878661 is about 89927.0741267612. The cubic root of 8086878661 is about 2007.2138374079.

The spelling of 8086878661 in words is "eight billion, eighty-six million, eight hundred seventy-eight thousand, six hundred sixty-one".