649499516 has 12 divisors (see below), whose sum is σ = 1136827440. Its totient is φ = 324691680.

The previous prime is 649499509. The next prime is 649499549. The reversal of 649499516 is 615994946.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19496 + ... + 40976.

It is an arithmetic number, because the mean of its divisors is an integer number (94735620).

Almost surely, 2^649499516 is an apocalyptic number.

It is an amenable number.

649499516 is a deficient number, since it is larger than the sum of its proper divisors (487327924).

649499516 is a wasteful number, since it uses less digits than its factorization.

649499516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29044 (or 29042 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 53.

The square root of 649499516 is about 25485.2803790737. The cubic root of 649499516 is about 866.0167206581.

The spelling of 649499516 in words is "six hundred forty-nine million, four hundred ninety-nine thousand, five hundred sixteen".