649910603 has 2 divisors, whose sum is σ = 649910604. Its totient is φ = 649910602.

The previous prime is 649910537. The next prime is 649910621. The reversal of 649910603 is 306019946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649910603 is a prime.

It is not a weakly prime, because it can be changed into another prime (649910633) 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, 324955301 + 324955302.

It is an arithmetic number, because the mean of its divisors is an integer number (324955302).

Almost surely, 2^649910603 is an apocalyptic number.

649910603 is a deficient number, since it is larger than the sum of its proper divisors (1).

649910603 is an equidigital number, since it uses as much as digits as its factorization.

649910603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 649910603 is about 25493.3442882647. The cubic root of 649910603 is about 866.1993911215.

The spelling of 649910603 in words is "six hundred forty-nine million, nine hundred ten thousand, six hundred three".