6727851649 has 2 divisors, whose sum is σ = 6727851650. Its totient is φ = 6727851648.

The previous prime is 6727851617. The next prime is 6727851667. The reversal of 6727851649 is 9461587276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5699495025 + 1028356624 = 75495^2 + 32068^2 .

It is a cyclic number.

It is not a de Polignac number, because 6727851649 - 2⁵ = 6727851617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6727851649.

It is not a weakly prime, because it can be changed into another prime (6727851349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3363925824 + 3363925825.

It is an arithmetic number, because the mean of its divisors is an integer number (3363925825).

Almost surely, 2^6727851649 is an apocalyptic number.

It is an amenable number.

6727851649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6727851649 is an equidigital number, since it uses as much as digits as its factorization.

6727851649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 55.

The square root of 6727851649 is about 82023.4823023261. The cubic root of 6727851649 is about 1887.8122599853.

The spelling of 6727851649 in words is "six billion, seven hundred twenty-seven million, eight hundred fifty-one thousand, six hundred forty-nine".