6511489 has 2 divisors, whose sum is σ = 6511490. Its totient is φ = 6511488.

The previous prime is 6511487. The next prime is 6511499. The reversal of 6511489 is 9841156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 85264 = 2535^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511489 - 2¹ = 6511487 is a prime.

Together with 6511487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6511487) 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, 3255744 + 3255745.

It is an arithmetic number, because the mean of its divisors is an integer number (3255745).

Almost surely, 2^6511489 is an apocalyptic number.

It is an amenable number.

6511489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511489 is an equidigital number, since it uses as much as digits as its factorization.

6511489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 6511489 is about 2551.7619403071. The cubic root of 6511489 is about 186.7354490711.

The spelling of 6511489 in words is "six million, five hundred eleven thousand, four hundred eighty-nine".