6856207 has 4 divisors (see below), whose sum is σ = 7217080. Its totient is φ = 6495336.

The previous prime is 6856189. The next prime is 6856229. The reversal of 6856207 is 7026586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6856207 - 2⁷ = 6856079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180408 + ... + 180445.

It is an arithmetic number, because the mean of its divisors is an integer number (1804270).

Almost surely, 2^6856207 is an apocalyptic number.

6856207 is a deficient number, since it is larger than the sum of its proper divisors (360873).

6856207 is a wasteful number, since it uses less digits than its factorization.

6856207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360872.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 6856207 is about 2618.4359835597. The cubic root of 6856207 is about 189.9742070250.

The spelling of 6856207 in words is "six million, eight hundred fifty-six thousand, two hundred seven".