6767898989 has 2 divisors, whose sum is σ = 6767898990. Its totient is φ = 6767898988.

The previous prime is 6767898979. The next prime is 6767899003. The reversal of 6767898989 is 9898987676.

6767898989 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3402738889 + 3365160100 = 58333^2 + 58010^2 .

It is a cyclic number.

It is not a de Polignac number, because 6767898989 - 2¹² = 6767894893 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6767898959) 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 as a sum of consecutive naturals, namely, 3383949494 + 3383949495.

It is an arithmetic number, because the mean of its divisors is an integer number (3383949495).

Almost surely, 2^6767898989 is an apocalyptic number.

It is an amenable number.

6767898989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6767898989 is an equidigital number, since it uses as much as digits as its factorization.

6767898989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658409472, while the sum is 77.

The square root of 6767898989 is about 82267.2412871612. The cubic root of 6767898989 is about 1891.5505681167.

The spelling of 6767898989 in words is "six billion, seven hundred sixty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-nine".