6878556 has 18 divisors (see below), whose sum is σ = 17387552. Its totient is φ = 2292840.

The previous prime is 6878533. The next prime is 6878567. The reversal of 6878556 is 6558786.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95500 + ... + 95571.

Almost surely, 2^6878556 is an apocalyptic number.

It is an amenable number.

6878556 is an abundant number, since it is smaller than the sum of its proper divisors (10508996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6878556 is a wasteful number, since it uses less digits than its factorization.

6878556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191081 (or 191076 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 6878556 is about 2622.7001353567. The cubic root of 6878556 is about 190.1804011424.

The spelling of 6878556 in words is "six million, eight hundred seventy-eight thousand, five hundred fifty-six".