6867987 has 24 divisors (see below), whose sum is σ = 11217600. Its totient is φ = 3716496.

The previous prime is 6867967. The next prime is 6867989. The reversal of 6867987 is 7897686.

It is a happy number.

It is not a de Polignac number, because 6867987 - 2⁶ = 6867923 is a prime.

6867987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6867989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1564 + ... + 4022.

It is an arithmetic number, because the mean of its divisors is an integer number (467400).

Almost surely, 2^6867987 is an apocalyptic number.

6867987 is a deficient number, since it is larger than the sum of its proper divisors (4349613).

6867987 is a wasteful number, since it uses less digits than its factorization.

6867987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2488 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 6867987 is about 2620.6844525810. The cubic root of 6867987 is about 190.0829462399.

The spelling of 6867987 in words is "six million, eight hundred sixty-seven thousand, nine hundred eighty-seven".