6864987 has 8 divisors (see below), whose sum is σ = 9170704. Its totient is φ = 4567968.

The previous prime is 6864983. The next prime is 6864997. The reversal of 6864987 is 7894686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6864987 - 2² = 6864983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6864983) 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, 28 + ... + 3705.

It is an arithmetic number, because the mean of its divisors is an integer number (1146338).

Almost surely, 2^6864987 is an apocalyptic number.

6864987 is a deficient number, since it is larger than the sum of its proper divisors (2305717).

6864987 is a wasteful number, since it uses less digits than its factorization.

6864987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349.

The product of its digits is 580608, while the sum is 48.

The square root of 6864987 is about 2620.1120205060. The cubic root of 6864987 is about 190.0552655484.

The spelling of 6864987 in words is "six million, eight hundred sixty-four thousand, nine hundred eighty-seven".