649959812 has 12 divisors (see below), whose sum is σ = 1156708560. Its totient is φ = 319471656.

The previous prime is 649959769. The next prime is 649959823. The reversal of 649959812 is 218959946.

649959812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376798 + ... + 1377269.

It is an arithmetic number, because the mean of its divisors is an integer number (96392380).

Almost surely, 2^649959812 is an apocalyptic number.

It is an amenable number.

649959812 is a deficient number, since it is larger than the sum of its proper divisors (506748748).

649959812 is a wasteful number, since it uses less digits than its factorization.

649959812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754130 (or 2754128 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 53.

The square root of 649959812 is about 25494.3094042573. The cubic root of 649959812 is about 866.2212524513.

The spelling of 649959812 in words is "six hundred forty-nine million, nine hundred fifty-nine thousand, eight hundred twelve".