6876639 has 24 divisors (see below), whose sum is σ = 12385152. Its totient is φ = 3571920.

The previous prime is 6876631. The next prime is 6876659. The reversal of 6876639 is 9366786.

6876639 is a `hidden beast` number, since 6 + 8 + 7 + 6 + 639 = 666.

6876639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6876639 - 2³ = 6876631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6876594 and 6876603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6876631) 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, 4269 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (516048).

Almost surely, 2^6876639 is an apocalyptic number.

6876639 is a deficient number, since it is larger than the sum of its proper divisors (5508513).

6876639 is a wasteful number, since it uses less digits than its factorization.

6876639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947 (or 9944 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 6876639 is about 2622.3346468367. The cubic root of 6876639 is about 190.1627322352.

The spelling of 6876639 in words is "six million, eight hundred seventy-six thousand, six hundred thirty-nine".