6887126791 has 8 divisors (see below), whose sum is σ = 6907799024. Its totient is φ = 6866475840.

The previous prime is 6887126767. The next prime is 6887126839. The reversal of 6887126791 is 1976217886.

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 6887126791 - 2⁵ = 6887126759 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 (6887126731) 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, 832411 + ... + 840643.

It is an arithmetic number, because the mean of its divisors is an integer number (863474878).

Almost surely, 2^6887126791 is an apocalyptic number.

6887126791 is a deficient number, since it is larger than the sum of its proper divisors (20672233).

6887126791 is a wasteful number, since it uses less digits than its factorization.

6887126791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641.

The product of its digits is 2032128, while the sum is 55.

The square root of 6887126791 is about 82988.7148412361. The cubic root of 6887126791 is about 1902.5935763357.

The spelling of 6887126791 in words is "six billion, eight hundred eighty-seven million, one hundred twenty-six thousand, seven hundred ninety-one".