8626861 has 2 divisors, whose sum is σ = 8626862. Its totient is φ = 8626860.

The previous prime is 8626847. The next prime is 8626901. The reversal of 8626861 is 1686268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8590761 + 36100 = 2931^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 8626861 - 2⁷ = 8626733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8626861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8626801) 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, 4313430 + 4313431.

It is an arithmetic number, because the mean of its divisors is an integer number (4313431).

Almost surely, 2^8626861 is an apocalyptic number.

It is an amenable number.

8626861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8626861 is an equidigital number, since it uses as much as digits as its factorization.

8626861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 8626861 is about 2937.1518517094. The cubic root of 8626861 is about 205.0930452103.

The spelling of 8626861 in words is "eight million, six hundred twenty-six thousand, eight hundred sixty-one".