6666834688 has 36 divisors (see below), whose sum is σ = 13317706528. Its totient is φ = 3330892800.

The previous prime is 6666834667. The next prime is 6666834731. The reversal of 6666834688 is 8864386666.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355138 + ... + 373438.

Almost surely, 2^6666834688 is an apocalyptic number.

It is an amenable number.

6666834688 is a deficient number, since it is larger than the sum of its proper divisors (6650871840).

6666834688 is a wasteful number, since it uses less digits than its factorization.

6666834688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19740 (or 19726 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 61.

The square root of 6666834688 is about 81650.6870026211. The cubic root of 6666834688 is about 1882.0878690421.

The spelling of 6666834688 in words is "six billion, six hundred sixty-six million, eight hundred thirty-four thousand, six hundred eighty-eight".