6666727794 has 16 divisors (see below), whose sum is σ = 13403266560. Its totient is φ = 2210607440.

The previous prime is 6666727789. The next prime is 6666727807. The reversal of 6666727794 is 4977276666.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907549 + ... + 2909840.

It is an arithmetic number, because the mean of its divisors is an integer number (837704160).

Almost surely, 2^6666727794 is an apocalyptic number.

6666727794 is an abundant number, since it is smaller than the sum of its proper divisors (6736538766).

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

6666727794 is a wasteful number, since it uses less digits than its factorization.

6666727794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817585.

The product of its digits is 32006016, while the sum is 60.

The square root of 6666727794 is about 81650.0324188546. The cubic root of 6666727794 is about 1882.0778100468.

The spelling of 6666727794 in words is "six billion, six hundred sixty-six million, seven hundred twenty-seven thousand, seven hundred ninety-four".