6666600028 has 36 divisors (see below), whose sum is σ = 12864312216. Its totient is φ = 3020644000.

The previous prime is 6666599983. The next prime is 6666600029. The reversal of 6666600028 is 8200066666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666600029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131703 + ... + 175153.

It is an arithmetic number, because the mean of its divisors is an integer number (357342006).

Almost surely, 2^6666600028 is an apocalyptic number.

It is an amenable number.

6666600028 is a deficient number, since it is larger than the sum of its proper divisors (6197712188).

6666600028 is a wasteful number, since it uses less digits than its factorization.

6666600028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43794 (or 43781 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 6666600028 is about 81649.2500149267. The cubic root of 6666600028 is about 1882.0657868025.

The spelling of 6666600028 in words is "six billion, six hundred sixty-six million, six hundred thousand, twenty-eight".