8540664487 has 2 divisors, whose sum is σ = 8540664488. Its totient is φ = 8540664486.

The previous prime is 8540664481. The next prime is 8540664491. The reversal of 8540664487 is 7844660458.

8540664487 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8540664487 - 2¹¹ = 8540662439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8540664481) 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, 4270332243 + 4270332244.

It is an arithmetic number, because the mean of its divisors is an integer number (4270332244).

Almost surely, 2^8540664487 is an apocalyptic number.

8540664487 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540664487 is an equidigital number, since it uses as much as digits as its factorization.

8540664487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5160960, while the sum is 52.

The square root of 8540664487 is about 92415.7155845260. The cubic root of 8540664487 is about 2044.0768534815.

The spelling of 8540664487 in words is "eight billion, five hundred forty million, six hundred sixty-four thousand, four hundred eighty-seven".