6856003 has 16 divisors (see below), whose sum is σ = 8605440. Its totient is φ = 5306400.

The previous prime is 6855971. The next prime is 6856009. The reversal of 6856003 is 3006586.

It is not a de Polignac number, because 6856003 - 2⁵ = 6855971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6856009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20548 + ... + 20878.

It is an arithmetic number, because the mean of its divisors is an integer number (537840).

Almost surely, 2^6856003 is an apocalyptic number.

6856003 is a deficient number, since it is larger than the sum of its proper divisors (1749437).

6856003 is a wasteful number, since it uses less digits than its factorization.

6856003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6856003 is about 2618.3970287181. The cubic root of 6856003 is about 189.9723228383.

The spelling of 6856003 in words is "six million, eight hundred fifty-six thousand, three".