6499855268 has 24 divisors (see below), whose sum is σ = 11703072192. Its totient is φ = 3156434784.

The previous prime is 6499855261. The next prime is 6499855279. The reversal of 6499855268 is 8625589946.

It is a self number, because there is not a number n which added to its sum of digits gives 6499855268.

It is not an unprimeable number, because it can be changed into a prime (6499855261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44321 + ... + 122327.

It is an arithmetic number, because the mean of its divisors is an integer number (487628008).

Almost surely, 2^6499855268 is an apocalyptic number.

It is an amenable number.

6499855268 is a deficient number, since it is larger than the sum of its proper divisors (5203216924).

6499855268 is a wasteful number, since it uses less digits than its factorization.

6499855268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78611 (or 78609 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 62.

The square root of 6499855268 is about 80621.6798882286. The cubic root of 6499855268 is about 1866.2417266698.

The spelling of 6499855268 in words is "six billion, four hundred ninety-nine million, eight hundred fifty-five thousand, two hundred sixty-eight".