6856506 has 12 divisors (see below), whose sum is σ = 14855802. Its totient is φ = 2285496.

The previous prime is 6856483. The next prime is 6856517. The reversal of 6856506 is 6056586.

It can be written as a sum of positive squares in only one way, i.e., 6548481 + 308025 = 2559^2 + 555^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 190441 + ... + 190476.

Almost surely, 2^6856506 is an apocalyptic number.

6856506 is an abundant number, since it is smaller than the sum of its proper divisors (7999296).

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

6856506 is a wasteful number, since it uses less digits than its factorization.

6856506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380925 (or 380922 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 6856506 is about 2618.4930780890. The cubic root of 6856506 is about 189.9769685841.

The spelling of 6856506 in words is "six million, eight hundred fifty-six thousand, five hundred six".