649905113 has 16 divisors (see below), whose sum is σ = 773203200. Its totient is φ = 538462080.

The previous prime is 649905083. The next prime is 649905169. The reversal of 649905113 is 311509946.

It is not a de Polignac number, because 649905113 - 2¹⁰ = 649904089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649905713) 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 in 15 ways as a sum of consecutive naturals, for example, 17468 + ... + 40061.

It is an arithmetic number, because the mean of its divisors is an integer number (48325200).

Almost surely, 2^649905113 is an apocalyptic number.

It is an amenable number.

649905113 is a deficient number, since it is larger than the sum of its proper divisors (123298087).

649905113 is a wasteful number, since it uses less digits than its factorization.

649905113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57632.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 649905113 is about 25493.2366128744. The cubic root of 649905113 is about 866.1969520948.

The spelling of 649905113 in words is "six hundred forty-nine million, nine hundred five thousand, one hundred thirteen".