6789898987 has 2 divisors, whose sum is σ = 6789898988.
Its totient is φ = 6789898986.
The previous prime is 6789898981. The next prime is 6789898993. The reversal of 6789898987 is 7898989876.
6789898987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is a balanced prime because it is at equal distance from previous prime (6789898981) and next prime (6789898993).
It is a cyclic number.
It is not a de Polignac number, because 6789898987 - 219 = 6789374699 is a prime.
It is a super-2 number, since 2×67898989872 = 92205456507327252338, which contains 22 as substring.
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 (6789898981) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394949493 + 3394949494.
It is an arithmetic number, because the mean of its divisors is an integer number (3394949494).
Almost surely, 26789898987 is an apocalyptic number.
6789898987 is a deficient number, since it is larger than the sum of its proper divisors (1).
6789898987 is an equidigital number, since it uses as much as digits as its factorization.
6789898987 is an evil number, because the sum of its binary digits is even.
The product of its digits is 877879296, while the sum is 79.
The square root of 6789898987 is about 82400.8433634025.
The cubic root of 6789898987 is about 1893.5979341318.
The spelling of 6789898987 in words is "six billion, seven hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-seven".