6364640368 has 20 divisors (see below), whose sum is σ = 12980517160. Its totient is φ = 3014829504.

The previous prime is 6364640329. The next prime is 6364640369. The reversal of 6364640368 is 8630464636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6364640369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10467855 + ... + 10468462.

It is an arithmetic number, because the mean of its divisors is an integer number (649025858).

Almost surely, 2^6364640368 is an apocalyptic number.

It is an amenable number.

6364640368 is an abundant number, since it is smaller than the sum of its proper divisors (6615876792).

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

6364640368 is a wasteful number, since it uses less digits than its factorization.

6364640368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20936344 (or 20936338 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

The square root of 6364640368 is about 79778.6962039365. The cubic root of 6364640368 is about 1853.2099487700.

The spelling of 6364640368 in words is "six billion, three hundred sixty-four million, six hundred forty thousand, three hundred sixty-eight".