6887889017 has 2 divisors, whose sum is σ = 6887889018. Its totient is φ = 6887889016.

The previous prime is 6887888999. The next prime is 6887889023. The reversal of 6887889017 is 7109887886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5495405161 + 1392483856 = 74131^2 + 37316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6887889017 is a prime.

It is a super-2 number, since 2×6887889017² = 94886030221018452578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6887889037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3443944508 + 3443944509.

It is an arithmetic number, because the mean of its divisors is an integer number (3443944509).

Almost surely, 2^6887889017 is an apocalyptic number.

It is an amenable number.

6887889017 is a deficient number, since it is larger than the sum of its proper divisors (1).

6887889017 is an equidigital number, since it uses as much as digits as its factorization.

6887889017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 62.

The square root of 6887889017 is about 82993.3070614733. The cubic root of 6887889017 is about 1902.6637629723.

The spelling of 6887889017 in words is "six billion, eight hundred eighty-seven million, eight hundred eighty-nine thousand, seventeen".