649238327 has 2 divisors, whose sum is σ = 649238328. Its totient is φ = 649238326.

The previous prime is 649238323. The next prime is 649238329. The reversal of 649238327 is 723832946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649238327 - 2² = 649238323 is a prime.

Together with 649238329, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649238323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324619163 + 324619164.

It is an arithmetic number, because the mean of its divisors is an integer number (324619164).

Almost surely, 2^649238327 is an apocalyptic number.

649238327 is a deficient number, since it is larger than the sum of its proper divisors (1).

649238327 is an equidigital number, since it uses as much as digits as its factorization.

649238327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The square root of 649238327 is about 25480.1555529004. The cubic root of 649238327 is about 865.9006187659.

The spelling of 649238327 in words is "six hundred forty-nine million, two hundred thirty-eight thousand, three hundred twenty-seven".