6681480668 has 24 divisors (see below), whose sum is σ = 11906237952. Its totient is φ = 3280241664.

The previous prime is 6681480647. The next prime is 6681480679. The reversal of 6681480668 is 8660841866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18521 + ... + 117072.

It is an arithmetic number, because the mean of its divisors is an integer number (496093248).

Almost surely, 2^6681480668 is an apocalyptic number.

It is an amenable number.

6681480668 is a deficient number, since it is larger than the sum of its proper divisors (5224757284).

6681480668 is a wasteful number, since it uses less digits than its factorization.

6681480668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135821 (or 135819 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 53.

The square root of 6681480668 is about 81740.3246139872. The cubic root of 6681480668 is about 1883.4650773599.

The spelling of 6681480668 in words is "six billion, six hundred eighty-one million, four hundred eighty thousand, six hundred sixty-eight".