6500385648 has 40 divisors (see below), whose sum is σ = 18658515600. Its totient is φ = 2166795072.

The previous prime is 6500385587. The next prime is 6500385739. The reversal of 6500385648 is 8465830056.

6500385648 is a `hidden beast` number, since 6 + 50 + 0 + 38 + 564 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7523163 + ... + 7524026.

It is an arithmetic number, because the mean of its divisors is an integer number (466462890).

Almost surely, 2^6500385648 is an apocalyptic number.

It is an amenable number.

6500385648 is an abundant number, since it is smaller than the sum of its proper divisors (12158129952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6500385648 is a wasteful number, since it uses less digits than its factorization.

6500385648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15047206 (or 15047194 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 6500385648 is about 80624.9691348778. The cubic root of 6500385648 is about 1866.2924862803.

The spelling of 6500385648 in words is "six billion, five hundred million, three hundred eighty-five thousand, six hundred forty-eight".