649663404 has 48 divisors (see below), whose sum is σ = 1685160960. Its totient is φ = 193446720.

The previous prime is 649663387. The next prime is 649663429. The reversal of 649663404 is 404366946.

649663404 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, 62334 + ... + 72005.

It is an arithmetic number, because the mean of its divisors is an integer number (35107520).

Almost surely, 2^649663404 is an apocalyptic number.

It is an amenable number.

649663404 is an abundant number, since it is smaller than the sum of its proper divisors (1035497556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649663404 is a wasteful number, since it uses less digits than its factorization.

649663404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134390 (or 134388 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 649663404 is about 25488.4955224901. The cubic root of 649663404 is about 866.0895551041.

The spelling of 649663404 in words is "six hundred forty-nine million, six hundred sixty-three thousand, four hundred four".