6496447987 has 2 divisors, whose sum is σ = 6496447988. Its totient is φ = 6496447986.

The previous prime is 6496447981. The next prime is 6496448011. The reversal of 6496447987 is 7897446946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6496447987 - 2²³ = 6488059379 is a prime.

It is not a weakly prime, because it can be changed into another prime (6496447981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248223993 + 3248223994.

It is an arithmetic number, because the mean of its divisors is an integer number (3248223994).

Almost surely, 2^6496447987 is an apocalyptic number.

6496447987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6496447987 is an equidigital number, since it uses as much as digits as its factorization.

6496447987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 64.

The square root of 6496447987 is about 80600.5458232139. The cubic root of 6496447987 is about 1865.9155695913.

The spelling of 6496447987 in words is "six billion, four hundred ninety-six million, four hundred forty-seven thousand, nine hundred eighty-seven".