8516449687 has 2 divisors, whose sum is σ = 8516449688. Its totient is φ = 8516449686.

The previous prime is 8516449657. The next prime is 8516449699. The reversal of 8516449687 is 7869446158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8516449687 - 2⁷ = 8516449559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8516449657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4258224843 + 4258224844.

It is an arithmetic number, because the mean of its divisors is an integer number (4258224844).

Almost surely, 2^8516449687 is an apocalyptic number.

8516449687 is a deficient number, since it is larger than the sum of its proper divisors (1).

8516449687 is an equidigital number, since it uses as much as digits as its factorization.

8516449687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 58.

The square root of 8516449687 is about 92284.6124064028. The cubic root of 8516449687 is about 2042.1432114108.

The spelling of 8516449687 in words is "eight billion, five hundred sixteen million, four hundred forty-nine thousand, six hundred eighty-seven".