649336603 has 4 divisors (see below), whose sum is σ = 649602280. Its totient is φ = 649070928.

The previous prime is 649336591. The next prime is 649336619. The reversal of 649336603 is 306633946.

649336603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 649336603 - 2¹³ = 649328411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649336673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129138 + ... + 134071.

It is an arithmetic number, because the mean of its divisors is an integer number (162400570).

Almost surely, 2^649336603 is an apocalyptic number.

649336603 is a deficient number, since it is larger than the sum of its proper divisors (265677).

649336603 is a wasteful number, since it uses less digits than its factorization.

649336603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265676.

The product of its (nonzero) digits is 209952, while the sum is 40.

The square root of 649336603 is about 25482.0839610892. The cubic root of 649336603 is about 865.9443073736.

The spelling of 649336603 in words is "six hundred forty-nine million, three hundred thirty-six thousand, six hundred three".