6646068888 has 32 divisors (see below), whose sum is σ = 16628550000. Its totient is φ = 2213572608.

The previous prime is 6646068853. The next prime is 6646068899. The reversal of 6646068888 is 8888606466.

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, 80881 + ... + 140832.

Almost surely, 2^6646068888 is an apocalyptic number.

It is an amenable number.

6646068888 is an abundant number, since it is smaller than the sum of its proper divisors (9982481112).

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

6646068888 is a wasteful number, since it uses less digits than its factorization.

6646068888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222971 (or 222967 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 60.

The square root of 6646068888 is about 81523.4253941773. The cubic root of 6646068888 is about 1880.1317328848.

The spelling of 6646068888 in words is "six billion, six hundred forty-six million, sixty-eight thousand, eight hundred eighty-eight".