646262012 has 24 divisors (see below), whose sum is σ = 1235434032. Its totient is φ = 293360000.

The previous prime is 646262011. The next prime is 646262033. The reversal of 646262012 is 210262646.

646262012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646262011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24512 + ... + 43512.

It is an arithmetic number, because the mean of its divisors is an integer number (51476418).

Almost surely, 2^646262012 is an apocalyptic number.

It is an amenable number.

646262012 is a deficient number, since it is larger than the sum of its proper divisors (589172020).

646262012 is a wasteful number, since it uses less digits than its factorization.

646262012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19789 (or 19787 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 646262012 is about 25421.6838938730. The cubic root of 646262012 is about 864.5754036752.

The spelling of 646262012 in words is "six hundred forty-six million, two hundred sixty-two thousand, twelve".