649907207 has 2 divisors, whose sum is σ = 649907208. Its totient is φ = 649907206.

The previous prime is 649907191. The next prime is 649907221. The reversal of 649907207 is 702709946.

649907207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649907207 - 2⁴ = 649907191 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 (649907227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324953603 + 324953604.

It is an arithmetic number, because the mean of its divisors is an integer number (324953604).

Almost surely, 2^649907207 is an apocalyptic number.

649907207 is a deficient number, since it is larger than the sum of its proper divisors (1).

649907207 is an equidigital number, since it uses as much as digits as its factorization.

649907207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 649907207 is about 25493.2776825578. The cubic root of 649907207 is about 866.1978823919.

The spelling of 649907207 in words is "six hundred forty-nine million, nine hundred seven thousand, two hundred seven".