6480070668 has 36 divisors (see below), whose sum is σ = 16728697440. Its totient is φ = 2114065056.

The previous prime is 6480070661. The next prime is 6480070721. The reversal of 6480070668 is 8660700846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (6480070661) 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 11 ways as a sum of consecutive naturals, for example, 1913223 + ... + 1916606.

It is an arithmetic number, because the mean of its divisors is an integer number (464686040).

Almost surely, 2^6480070668 is an apocalyptic number.

It is an amenable number.

6480070668 is an abundant number, since it is smaller than the sum of its proper divisors (10248626772).

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

6480070668 is a wasteful number, since it uses less digits than its factorization.

6480070668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829886 (or 3829881 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 6480070668 is about 80498.8861289397. The cubic root of 6480070668 is about 1864.3462807670.

The spelling of 6480070668 in words is "six billion, four hundred eighty million, seventy thousand, six hundred sixty-eight".