6856445 has 16 divisors (see below), whose sum is σ = 8476608. Its totient is φ = 5322240.

The previous prime is 6856429. The next prime is 6856459. The reversal of 6856445 is 5446586.

It is not a de Polignac number, because 6856445 - 2⁴ = 6856429 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6856399 and 6856408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32390 + ... + 32600.

It is an arithmetic number, because the mean of its divisors is an integer number (529788).

Almost surely, 2^6856445 is an apocalyptic number.

It is an amenable number.

6856445 is a deficient number, since it is larger than the sum of its proper divisors (1620163).

6856445 is a wasteful number, since it uses less digits than its factorization.

6856445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380.

The product of its digits is 115200, while the sum is 38.

The square root of 6856445 is about 2618.4814301423. The cubic root of 6856445 is about 189.9764051956.

The spelling of 6856445 in words is "six million, eight hundred fifty-six thousand, four hundred forty-five".