6535786664 has 32 divisors (see below), whose sum is σ = 13466260800. Its totient is φ = 2949121920.

The previous prime is 6535786657. The next prime is 6535786669. The reversal of 6535786664 is 4666875356.

It is not an unprimeable number, because it can be changed into a prime (6535786669) 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 in 7 ways as a sum of consecutive naturals, for example, 259004 + ... + 283115.

It is an arithmetic number, because the mean of its divisors is an integer number (420820650).

Almost surely, 2^6535786664 is an apocalyptic number.

It is an amenable number.

6535786664 is an abundant number, since it is smaller than the sum of its proper divisors (6930474136).

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

6535786664 is a wasteful number, since it uses less digits than its factorization.

6535786664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542273 (or 542269 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The square root of 6535786664 is about 80844.2123098494. The cubic root of 6535786664 is about 1869.6742895026.

The spelling of 6535786664 in words is "six billion, five hundred thirty-five million, seven hundred eighty-six thousand, six hundred sixty-four".