6866487 has 12 divisors (see below), whose sum is σ = 10501920. Its totient is φ = 4308288.

The previous prime is 6866473. The next prime is 6866513. The reversal of 6866487 is 7846686.

It is a happy number.

6866487 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6866487 - 2⁴ = 6866471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22287 + ... + 22592.

It is an arithmetic number, because the mean of its divisors is an integer number (875160).

Almost surely, 2^6866487 is an apocalyptic number.

6866487 is a deficient number, since it is larger than the sum of its proper divisors (3635433).

6866487 is a wasteful number, since it uses less digits than its factorization.

6866487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44902 (or 44899 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 6866487 is about 2620.3982521747. The cubic root of 6866487 is about 190.0691069020.

The spelling of 6866487 in words is "six million, eight hundred sixty-six thousand, four hundred eighty-seven".