6856203217 has 8 divisors (see below), whose sum is σ = 6941335520. Its totient is φ = 6771582720.

The previous prime is 6856203191. The next prime is 6856203227. The reversal of 6856203217 is 7123026586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6856203217 is a prime.

It is a super-2 number, since 2×6856203217² = 94015045105602298178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6856203217.

It is not an unprimeable number, because it can be changed into a prime (6856203227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100959 + ... + 154612.

It is an arithmetic number, because the mean of its divisors is an integer number (867666940).

Almost surely, 2^6856203217 is an apocalyptic number.

It is an amenable number.

6856203217 is a deficient number, since it is larger than the sum of its proper divisors (85132303).

6856203217 is a wasteful number, since it uses less digits than its factorization.

6856203217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255903.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 6856203217 is about 82802.1933103224. The cubic root of 6856203217 is about 1899.7417208477.

The spelling of 6856203217 in words is "six billion, eight hundred fifty-six million, two hundred three thousand, two hundred seventeen".