6786992887 has 4 divisors (see below), whose sum is σ = 6787427616. Its totient is φ = 6786558160.

The previous prime is 6786992837. The next prime is 6786992897. The reversal of 6786992887 is 7882996876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6786992887 - 2¹⁵ = 6786960119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6786992827) 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 in 3 ways as a sum of consecutive naturals, for example, 193039 + ... + 225472.

It is an arithmetic number, because the mean of its divisors is an integer number (1696856904).

Almost surely, 2^6786992887 is an apocalyptic number.

6786992887 is a deficient number, since it is larger than the sum of its proper divisors (434729).

6786992887 is a wasteful number, since it uses less digits than its factorization.

6786992887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434728.

The product of its digits is 146313216, while the sum is 70.

The square root of 6786992887 is about 82383.2075546953. The cubic root of 6786992887 is about 1893.3277401151.

The spelling of 6786992887 in words is "six billion, seven hundred eighty-six million, nine hundred ninety-two thousand, eight hundred eighty-seven".