6887114989 has 2 divisors, whose sum is σ = 6887114990. Its totient is φ = 6887114988.

The previous prime is 6887114981. The next prime is 6887115013. The reversal of 6887114989 is 9894117886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4414539364 + 2472575625 = 66442^2 + 49725^2 .

It is a cyclic number.

It is not a de Polignac number, because 6887114989 - 2³ = 6887114981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6887114981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3443557494 + 3443557495.

It is an arithmetic number, because the mean of its divisors is an integer number (3443557495).

Almost surely, 2^6887114989 is an apocalyptic number.

It is an amenable number.

6887114989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6887114989 is an equidigital number, since it uses as much as digits as its factorization.

6887114989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 61.

The square root of 6887114989 is about 82988.6437351521. The cubic root of 6887114989 is about 1902.5924895535.

The spelling of 6887114989 in words is "six billion, eight hundred eighty-seven million, one hundred fourteen thousand, nine hundred eighty-nine".