6846991 has 2 divisors, whose sum is σ = 6846992. Its totient is φ = 6846990.

The previous prime is 6846989. The next prime is 6847003. The reversal of 6846991 is 1996486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6846991 - 2¹ = 6846989 is a prime.

Together with 6846989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6846941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3423495 + 3423496.

It is an arithmetic number, because the mean of its divisors is an integer number (3423496).

Almost surely, 2^6846991 is an apocalyptic number.

6846991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6846991 is an equidigital number, since it uses as much as digits as its factorization.

6846991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 6846991 is about 2616.6755626176. The cubic root of 6846991 is about 189.8890487957.

The spelling of 6846991 in words is "six million, eight hundred forty-six thousand, nine hundred ninety-one".