6856351 has 4 divisors (see below), whose sum is σ = 6861832. Its totient is φ = 6850872.

The previous prime is 6856279. The next prime is 6856357. The reversal of 6856351 is 1536586.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6856351 - 2¹¹ = 6854303 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 (6856357) 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, 160 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (1715458).

Almost surely, 2^6856351 is an apocalyptic number.

6856351 is a deficient number, since it is larger than the sum of its proper divisors (5481).

6856351 is a wasteful number, since it uses less digits than its factorization.

6856351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480.

The product of its digits is 21600, while the sum is 34.

The square root of 6856351 is about 2618.4634807459. The cubic root of 6856351 is about 189.9755370167.

The spelling of 6856351 in words is "six million, eight hundred fifty-six thousand, three hundred fifty-one".