649024688 has 20 divisors (see below), whose sum is σ = 1354215408. Its totient is φ = 299549760.

The previous prime is 649024643. The next prime is 649024693. The reversal of 649024688 is 886420946.

649024688 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, 1559948 + ... + 1560363.

Almost surely, 2^649024688 is an apocalyptic number.

It is an amenable number.

649024688 is an abundant number, since it is smaller than the sum of its proper divisors (705190720).

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

649024688 is a wasteful number, since it uses less digits than its factorization.

649024688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120332 (or 3120326 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 649024688 is about 25475.9629454904. The cubic root of 649024688 is about 865.8056303108.

The spelling of 649024688 in words is "six hundred forty-nine million, twenty-four thousand, six hundred eighty-eight".