6867109887 has 64 divisors (see below), whose sum is σ = 10490757120. Its totient is φ = 3959312000.

The previous prime is 6867109877. The next prime is 6867109901. The reversal of 6867109887 is 7889017686.

It is a cyclic number.

It is not a de Polignac number, because 6867109887 - 2⁸ = 6867109631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6867109887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6867109817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9242038 + ... + 9242780.

It is an arithmetic number, because the mean of its divisors is an integer number (163918080).

Almost surely, 2^6867109887 is an apocalyptic number.

6867109887 is a deficient number, since it is larger than the sum of its proper divisors (3623647233).

6867109887 is a wasteful number, since it uses less digits than its factorization.

6867109887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The square root of 6867109887 is about 82868.0269283636. The cubic root of 6867109887 is about 1900.7485404245.

The spelling of 6867109887 in words is "six billion, eight hundred sixty-seven million, one hundred nine thousand, eight hundred eighty-seven".