649564616 has 16 divisors (see below), whose sum is σ = 1219493040. Its totient is φ = 324366480.

The previous prime is 649564613. The next prime is 649564621. The reversal of 649564616 is 616465946.

649564616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (649564613) 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, 45290 + ... + 57881.

It is an arithmetic number, because the mean of its divisors is an integer number (76218315).

Almost surely, 2^649564616 is an apocalyptic number.

It is an amenable number.

649564616 is a deficient number, since it is larger than the sum of its proper divisors (569928424).

649564616 is a wasteful number, since it uses less digits than its factorization.

649564616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103964 (or 103960 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 649564616 is about 25486.5575549151. The cubic root of 649564616 is about 866.0456536050.

The spelling of 649564616 in words is "six hundred forty-nine million, five hundred sixty-four thousand, six hundred sixteen".