6464320008 has 16 divisors (see below), whose sum is σ = 16160800080. Its totient is φ = 2154773328.

The previous prime is 6464320007. The next prime is 6464320033. The reversal of 6464320008 is 8000234646.

It is not an unprimeable number, because it can be changed into a prime (6464320007) 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, 134673310 + ... + 134673357.

It is an arithmetic number, because the mean of its divisors is an integer number (1010050005).

Almost surely, 2^6464320008 is an apocalyptic number.

It is an amenable number.

6464320008 is an abundant number, since it is smaller than the sum of its proper divisors (9696480072).

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

6464320008 is a wasteful number, since it uses less digits than its factorization.

6464320008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269346676 (or 269346672 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 6464320008 is about 80400.9950684691. The cubic root of 6464320008 is about 1862.8345427194.

The spelling of 6464320008 in words is "six billion, four hundred sixty-four million, three hundred twenty thousand, eight".