651003664 has 40 divisors (see below), whose sum is σ = 1288946520. Its totient is φ = 318409728.

The previous prime is 651003653. The next prime is 651003679. The reversal of 651003664 is 466300156.

It can be written as a sum of positive squares in 4 ways, for example, as 344473600 + 306530064 = 18560^2 + 17508^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345894 + ... + 347770.

It is an arithmetic number, because the mean of its divisors is an integer number (32223663).

Almost surely, 2^651003664 is an apocalyptic number.

It is an amenable number.

651003664 is a deficient number, since it is larger than the sum of its proper divisors (637942856).

651003664 is a wasteful number, since it uses less digits than its factorization.

651003664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 651003664 is about 25514.7734459862. The cubic root of 651003664 is about 866.6847288806.

The spelling of 651003664 in words is "six hundred fifty-one million, three thousand, six hundred sixty-four".