6789878987 has 2 divisors, whose sum is σ = 6789878988. Its totient is φ = 6789878986.

The previous prime is 6789878957. The next prime is 6789878989. The reversal of 6789878987 is 7898789876.

6789878987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6789878987 - 2²⁴ = 6773101771 is a prime.

It is a super-2 number, since 2×6789878987² = 92204913316208292338, which contains 22 as substring.

Together with 6789878989, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (6789878989) 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, 3394939493 + 3394939494.

It is an arithmetic number, because the mean of its divisors is an integer number (3394939494).

Almost surely, 2^6789878987 is an apocalyptic number.

6789878987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6789878987 is an equidigital number, since it uses as much as digits as its factorization.

6789878987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 682795008, while the sum is 77.

The square root of 6789878987 is about 82400.7220053320. The cubic root of 6789878987 is about 1893.5960748997.

The spelling of 6789878987 in words is "six billion, seven hundred eighty-nine million, eight hundred seventy-eight thousand, nine hundred eighty-seven".