6500260649 has 2 divisors, whose sum is σ = 6500260650. Its totient is φ = 6500260648.

The previous prime is 6500260643. The next prime is 6500260721. The reversal of 6500260649 is 9460620056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4091905024 + 2408355625 = 63968^2 + 49075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6500260649 is a prime.

It is not a weakly prime, because it can be changed into another prime (6500260643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250130324 + 3250130325.

It is an arithmetic number, because the mean of its divisors is an integer number (3250130325).

Almost surely, 2^6500260649 is an apocalyptic number.

It is an amenable number.

6500260649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6500260649 is an equidigital number, since it uses as much as digits as its factorization.

6500260649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 6500260649 is about 80624.1939432575. The cubic root of 6500260649 is about 1866.2805235957.

The spelling of 6500260649 in words is "six billion, five hundred million, two hundred sixty thousand, six hundred forty-nine".