649623008 has 12 divisors (see below), whose sum is σ = 1278945360. Its totient is φ = 324811488.

The previous prime is 649622999. The next prime is 649623031. The reversal of 649623008 is 800326946.

649623008 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150328 + ... + 10150391.

It is an arithmetic number, because the mean of its divisors is an integer number (106578780).

Almost surely, 2^649623008 is an apocalyptic number.

It is an amenable number.

649623008 is a deficient number, since it is larger than the sum of its proper divisors (629322352).

649623008 is a wasteful number, since it uses less digits than its factorization.

649623008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20300729 (or 20300721 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 649623008 is about 25487.7030742278. The cubic root of 649623008 is about 866.0716036139.

The spelling of 649623008 in words is "six hundred forty-nine million, six hundred twenty-three thousand, eight".