6518987 has 2 divisors, whose sum is σ = 6518988. Its totient is φ = 6518986.

The previous prime is 6518933. The next prime is 6518989. The reversal of 6518987 is 7898156.

It is a happy number.

6518987 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 6518987 - 2⁸ = 6518731 is a prime.

Together with 6518989, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (6518989) 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, 3259493 + 3259494.

It is an arithmetic number, because the mean of its divisors is an integer number (3259494).

Almost surely, 2^6518987 is an apocalyptic number.

6518987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6518987 is an equidigital number, since it uses as much as digits as its factorization.

6518987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 44.

The square root of 6518987 is about 2553.2306985465. The cubic root of 6518987 is about 186.8070970622.

The spelling of 6518987 in words is "six million, five hundred eighteen thousand, nine hundred eighty-seven".