649680466 has 32 divisors (see below), whose sum is σ = 1055358720. Its totient is φ = 298811136.

The previous prime is 649680457. The next prime is 649680481. The reversal of 649680466 is 664086946.

649680466 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 15 ways as a sum of consecutive naturals, for example, 624775 + ... + 625813.

It is an arithmetic number, because the mean of its divisors is an integer number (32979960).

Almost surely, 2^649680466 is an apocalyptic number.

649680466 is a deficient number, since it is larger than the sum of its proper divisors (405678254).

649680466 is a wasteful number, since it uses less digits than its factorization.

649680466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The square root of 649680466 is about 25488.8302203142. The cubic root of 649680466 is about 866.0971370255.

The spelling of 649680466 in words is "six hundred forty-nine million, six hundred eighty thousand, four hundred sixty-six".