6464727968 has 24 divisors (see below), whose sum is σ = 12811730400. Its totient is φ = 3210955200.

The previous prime is 6464727961. The next prime is 6464727991. The reversal of 6464727968 is 8697274646.

It is not an unprimeable number, because it can be changed into a prime (6464727961) 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, 664118 + ... + 673781.

It is an arithmetic number, because the mean of its divisors is an integer number (533822100).

Almost surely, 2^6464727968 is an apocalyptic number.

It is an amenable number.

6464727968 is a deficient number, since it is larger than the sum of its proper divisors (6347002432).

6464727968 is a wasteful number, since it uses less digits than its factorization.

6464727968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338060 (or 1338052 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 59.

The square root of 6464727968 is about 80403.5320617198. The cubic root of 6464727968 is about 1862.8737294136.

The spelling of 6464727968 in words is "six billion, four hundred sixty-four million, seven hundred twenty-seven thousand, nine hundred sixty-eight".