8816861 has 2 divisors, whose sum is σ = 8816862. Its totient is φ = 8816860.

The previous prime is 8816837. The next prime is 8816869. The reversal of 8816861 is 1686188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6728836 + 2088025 = 2594^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 8816861 - 2¹⁸ = 8554717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8816869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4408430 + 4408431.

It is an arithmetic number, because the mean of its divisors is an integer number (4408431).

Almost surely, 2^8816861 is an apocalyptic number.

It is an amenable number.

8816861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8816861 is an equidigital number, since it uses as much as digits as its factorization.

8816861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 38.

The square root of 8816861 is about 2969.3199558148. The cubic root of 8816861 is about 206.5877971105.

The spelling of 8816861 in words is "eight million, eight hundred sixteen thousand, eight hundred sixty-one".