6887014991 has 4 divisors (see below), whose sum is σ = 6887247000. Its totient is φ = 6886782984.

The previous prime is 6887014957. The next prime is 6887015029. The reversal of 6887014991 is 1994107886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6887014991 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 (6887014921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63581 + ... + 133478.

It is an arithmetic number, because the mean of its divisors is an integer number (1721811750).

Almost surely, 2^6887014991 is an apocalyptic number.

6887014991 is a deficient number, since it is larger than the sum of its proper divisors (232009).

6887014991 is a wasteful number, since it uses less digits than its factorization.

6887014991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232008.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 6887014991 is about 82988.0412529420. The cubic root of 6887014991 is about 1902.5832812292.

The spelling of 6887014991 in words is "six billion, eight hundred eighty-seven million, fourteen thousand, nine hundred ninety-one".