6867488889 has 12 divisors (see below), whose sum is σ = 10161650772. Its totient is φ = 4466659200.

The previous prime is 6867488809. The next prime is 6867488893. The reversal of 6867488889 is 9888847686.

6867488889 is a `hidden beast` number, since 6 + 8 + 67 + 488 + 8 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3330213264 + 3537275625 = 57708^2 + 59475^2 .

It is not a de Polignac number, because 6867488889 - 2⁸ = 6867488633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6867488809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9305172 + ... + 9305909.

It is an arithmetic number, because the mean of its divisors is an integer number (846804231).

Almost surely, 2^6867488889 is an apocalyptic number.

It is an amenable number.

6867488889 is a deficient number, since it is larger than the sum of its proper divisors (3294161883).

6867488889 is a wasteful number, since it uses less digits than its factorization.

6867488889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18611128 (or 18611125 counting only the distinct ones).

The product of its digits is 297271296, while the sum is 72.

The square root of 6867488889 is about 82870.3136774563. The cubic root of 6867488889 is about 1900.7835077911.

The spelling of 6867488889 in words is "six billion, eight hundred sixty-seven million, four hundred eighty-eight thousand, eight hundred eighty-nine".