6756991 has 2 divisors, whose sum is σ = 6756992. Its totient is φ = 6756990.

The previous prime is 6756983. The next prime is 6757021. The reversal of 6756991 is 1996576.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6756991 - 2³ = 6756983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6756901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3378495 + 3378496.

It is an arithmetic number, because the mean of its divisors is an integer number (3378496).

Almost surely, 2^6756991 is an apocalyptic number.

6756991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6756991 is an equidigital number, since it uses as much as digits as its factorization.

6756991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 43.

The square root of 6756991 is about 2599.4212817472. The cubic root of 6756991 is about 189.0533802172.

The spelling of 6756991 in words is "six million, seven hundred fifty-six thousand, nine hundred ninety-one".