6327649 has 2 divisors, whose sum is σ = 6327650. Its totient is φ = 6327648.

The previous prime is 6327647. The next prime is 6327707. The reversal of 6327649 is 9467236.

6327649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4545424 + 1782225 = 2132^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 6327649 - 2¹ = 6327647 is a prime.

Together with 6327647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6327641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163824 + 3163825.

It is an arithmetic number, because the mean of its divisors is an integer number (3163825).

Almost surely, 2^6327649 is an apocalyptic number.

It is an amenable number.

6327649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6327649 is an equidigital number, since it uses as much as digits as its factorization.

6327649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 6327649 is about 2515.4818623874. The cubic root of 6327649 is about 184.9612677619.

It can be divided in two parts, 632 and 7649, that added together give a square (8281 = 91²).

The spelling of 6327649 in words is "six million, three hundred twenty-seven thousand, six hundred forty-nine".