649929716 has 12 divisors (see below), whose sum is σ = 1168117188. Its totient is φ = 316181952.

The previous prime is 649929697. The next prime is 649929719. The reversal of 649929716 is 617929946.

It can be written as a sum of positive squares in 2 ways, for example, as 542890000 + 107039716 = 23300^2 + 10346^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649929719) 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 3 ways as a sum of consecutive naturals, for example, 2195561 + ... + 2195856.

It is an arithmetic number, because the mean of its divisors is an integer number (97343099).

Almost surely, 2^649929716 is an apocalyptic number.

It is an amenable number.

649929716 is a deficient number, since it is larger than the sum of its proper divisors (518187472).

649929716 is a wasteful number, since it uses less digits than its factorization.

649929716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391458 (or 4391456 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 649929716 is about 25493.7191480568. The cubic root of 649929716 is about 866.2078822928.

The spelling of 649929716 in words is "six hundred forty-nine million, nine hundred twenty-nine thousand, seven hundred sixteen".