649648199 has 2 divisors, whose sum is σ = 649648200. Its totient is φ = 649648198.

The previous prime is 649648193. The next prime is 649648201. The reversal of 649648199 is 991846946.

649648199 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 a de Polignac number, because none of the positive numbers 2^k-649648199 is a prime.

Together with 649648201, 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 (649648193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324824099 + 324824100.

It is an arithmetic number, because the mean of its divisors is an integer number (324824100).

Almost surely, 2^649648199 is an apocalyptic number.

649648199 is a deficient number, since it is larger than the sum of its proper divisors (1).

649648199 is an equidigital number, since it uses as much as digits as its factorization.

649648199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 56.

The square root of 649648199 is about 25488.1972489229. The cubic root of 649648199 is about 866.0827982747.

The spelling of 649648199 in words is "six hundred forty-nine million, six hundred forty-eight thousand, one hundred ninety-nine".