6787898989 has 8 divisors (see below), whose sum is σ = 7112666880. Its totient is φ = 6465601296.

The previous prime is 6787898983. The next prime is 6787898993. The reversal of 6787898989 is 9898987876.

6787898989 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6787898989 - 2⁷ = 6787898861 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6787898983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611922 + ... + 622915.

It is an arithmetic number, because the mean of its divisors is an integer number (889083360).

Almost surely, 2^6787898989 is an apocalyptic number.

It is an amenable number.

6787898989 is a deficient number, since it is larger than the sum of its proper divisors (324767891).

6787898989 is a wasteful number, since it uses less digits than its factorization.

6787898989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235099.

The product of its digits is 877879296, while the sum is 79.

The square root of 6787898989 is about 82388.7066836226. The cubic root of 6787898989 is about 1893.4119930256.

The spelling of 6787898989 in words is "six billion, seven hundred eighty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-nine".