6991794027 has 6 divisors (see below), whose sum is σ = 10099258052. Its totient is φ = 4661196012.

The previous prime is 6991793969. The next prime is 6991794049. The reversal of 6991794027 is 7204971996.

6991794027 is a `hidden beast` number, since 69 + 9 + 179 + 402 + 7 = 666.

It is not a de Polignac number, because 6991794027 - 2⁸ = 6991793771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6991799027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388432993 + ... + 388433010.

Almost surely, 2^6991794027 is an apocalyptic number.

6991794027 is a deficient number, since it is larger than the sum of its proper divisors (3107464025).

6991794027 is a wasteful number, since it uses less digits than its factorization.

6991794027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776866009 (or 776866006 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 6991794027 is about 83616.9482042965. The cubic root of 6991794027 is about 1912.1833923160.

The spelling of 6991794027 in words is "six billion, nine hundred ninety-one million, seven hundred ninety-four thousand, twenty-seven".