650631664 has 10 divisors (see below), whose sum is σ = 1260598880. Its totient is φ = 325315824.

The previous prime is 650631623. The next prime is 650631677. The reversal of 650631664 is 466136056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20332224 + ... + 20332255.

It is an arithmetic number, because the mean of its divisors is an integer number (126059888).

Almost surely, 2^650631664 is an apocalyptic number.

It is an amenable number.

650631664 is a deficient number, since it is larger than the sum of its proper divisors (609967216).

650631664 is a wasteful number, since it uses less digits than its factorization.

650631664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40664487 (or 40664481 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 650631664 is about 25507.4825100401. The cubic root of 650631664 is about 866.5196155503.

The spelling of 650631664 in words is "six hundred fifty million, six hundred thirty-one thousand, six hundred sixty-four".