6887870687 has 16 divisors (see below), whose sum is σ = 7160745984. Its totient is φ = 6618348000.

The previous prime is 6887870641. The next prime is 6887870729. The reversal of 6887870687 is 7860787886.

It is a cyclic number.

It is not a de Polignac number, because 6887870687 - 2¹⁶ = 6887805151 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 (6887870617) 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 15 ways as a sum of consecutive naturals, for example, 2779493 + ... + 2781969.

It is an arithmetic number, because the mean of its divisors is an integer number (447546624).

Almost surely, 2^6887870687 is an apocalyptic number.

6887870687 is a deficient number, since it is larger than the sum of its proper divisors (272875297).

6887870687 is a wasteful number, since it uses less digits than its factorization.

6887870687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110.

The product of its (nonzero) digits is 50577408, while the sum is 65.

The square root of 6887870687 is about 82993.1966308082. The cubic root of 6887870687 is about 1902.6620751858.

The spelling of 6887870687 in words is "six billion, eight hundred eighty-seven million, eight hundred seventy thousand, six hundred eighty-seven".