6649367 has 2 divisors, whose sum is σ = 6649368. Its totient is φ = 6649366.

The previous prime is 6649337. The next prime is 6649387. The reversal of 6649367 is 7639466.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6649367 - 2¹⁶ = 6583831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6649337) 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, 3324683 + 3324684.

It is an arithmetic number, because the mean of its divisors is an integer number (3324684).

Almost surely, 2^6649367 is an apocalyptic number.

6649367 is a deficient number, since it is larger than the sum of its proper divisors (1).

6649367 is an equidigital number, since it uses as much as digits as its factorization.

6649367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 6649367 is about 2578.6366552890. The cubic root of 6649367 is about 188.0442686607.

Subtracting 6649367 from its reverse (7639466), we obtain a palindrome (990099).

The spelling of 6649367 in words is "six million, six hundred forty-nine thousand, three hundred sixty-seven".