6851443 has 2 divisors, whose sum is σ = 6851444. Its totient is φ = 6851442.

The previous prime is 6851441. The next prime is 6851461. The reversal of 6851443 is 3441586.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6851443 - 2¹ = 6851441 is a prime.

Together with 6851441, it forms a pair of twin primes.

It is equal to p₄₆₇₁₄₉ and since 6851443 and 467149 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6851441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3425721 + 3425722.

It is an arithmetic number, because the mean of its divisors is an integer number (3425722).

Almost surely, 2^6851443 is an apocalyptic number.

6851443 is a deficient number, since it is larger than the sum of its proper divisors (1).

6851443 is an equidigital number, since it uses as much as digits as its factorization.

6851443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 6851443 is about 2617.5261221237. The cubic root of 6851443 is about 189.9301959645.

The spelling of 6851443 in words is "six million, eight hundred fifty-one thousand, four hundred forty-three".