6787898993 has 2 divisors, whose sum is σ = 6787898994. Its totient is φ = 6787898992.

The previous prime is 6787898983. The next prime is 6787899059. The reversal of 6787898993 is 3998987876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3932920369 + 2854978624 = 62713^2 + 53432^2 .

It is a cyclic number.

It is not a de Polignac number, because 6787898993 - 2⁴ = 6787898977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6787898993.

It is not a weakly prime, because it can be changed into another prime (6787898933) by changing a digit.

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 as a sum of consecutive naturals, namely, 3393949496 + 3393949497.

It is an arithmetic number, because the mean of its divisors is an integer number (3393949497).

Almost surely, 2^6787898993 is an apocalyptic number.

It is an amenable number.

6787898993 is a deficient number, since it is larger than the sum of its proper divisors (1).

6787898993 is an equidigital number, since it uses as much as digits as its factorization.

6787898993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329204736, while the sum is 74.

The square root of 6787898993 is about 82388.7067078978. The cubic root of 6787898993 is about 1893.4119933975.

The spelling of 6787898993 in words is "six billion, seven hundred eighty-seven million, eight hundred ninety-eight thousand, nine hundred ninety-three".