6740849 has 2 divisors, whose sum is σ = 6740850. Its totient is φ = 6740848.

The previous prime is 6740843. The next prime is 6740861. The reversal of 6740849 is 9480476.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 110224 = 2575^2 + 332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6740849 is a prime.

It is not a weakly prime, because it can be changed into another prime (6740843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3370424 + 3370425.

It is an arithmetic number, because the mean of its divisors is an integer number (3370425).

Almost surely, 2^6740849 is an apocalyptic number.

It is an amenable number.

6740849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6740849 is an equidigital number, since it uses as much as digits as its factorization.

6740849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 6740849 is about 2596.3145032912. The cubic root of 6740849 is about 188.9027148793.

The spelling of 6740849 in words is "six million, seven hundred forty thousand, eight hundred forty-nine".