8640911 has 2 divisors, whose sum is σ = 8640912. Its totient is φ = 8640910.

The previous prime is 8640889. The next prime is 8640949. The reversal of 8640911 is 1190468.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8640911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8640211) 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, 4320455 + 4320456.

It is an arithmetic number, because the mean of its divisors is an integer number (4320456).

Almost surely, 2^8640911 is an apocalyptic number.

8640911 is a deficient number, since it is larger than the sum of its proper divisors (1).

8640911 is an equidigital number, since it uses as much as digits as its factorization.

8640911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 8640911 is about 2939.5426515021. The cubic root of 8640911 is about 205.2043253296.

The spelling of 8640911 in words is "eight million, six hundred forty thousand, nine hundred eleven".