6797998687 has 2 divisors, whose sum is σ = 6797998688. Its totient is φ = 6797998686.

The previous prime is 6797998667. The next prime is 6797998729. The reversal of 6797998687 is 7868997976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6797998687 - 2¹⁵ = 6797965919 is a prime.

It is a super-2 number, since 2×6797998687² = 92425572296907447938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6797998667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3398999343 + 3398999344.

It is an arithmetic number, because the mean of its divisors is an integer number (3398999344).

Almost surely, 2^6797998687 is an apocalyptic number.

6797998687 is a deficient number, since it is larger than the sum of its proper divisors (1).

6797998687 is an equidigital number, since it uses as much as digits as its factorization.

6797998687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576108288, while the sum is 76.

The square root of 6797998687 is about 82449.9768768918. The cubic root of 6797998687 is about 1894.3505953276.

The spelling of 6797998687 in words is "six billion, seven hundred ninety-seven million, nine hundred ninety-eight thousand, six hundred eighty-seven".