651550064 has 40 divisors (see below), whose sum is σ = 1421575680. Its totient is φ = 286603200.

The previous prime is 651550037. The next prime is 651550073. The reversal of 651550064 is 460055156.

It is a self number, because there is not a number n which added to its sum of digits gives 651550064.

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 in 7 ways as a sum of consecutive naturals, for example, 54254 + ... + 65165.

It is an arithmetic number, because the mean of its divisors is an integer number (35539392).

Almost surely, 2^651550064 is an apocalyptic number.

It is an amenable number.

651550064 is an abundant number, since it is smaller than the sum of its proper divisors (770025616).

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

651550064 is a wasteful number, since it uses less digits than its factorization.

651550064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119469 (or 119463 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 651550064 is about 25525.4787222493. The cubic root of 651550064 is about 866.9271361744.

The spelling of 651550064 in words is "six hundred fifty-one million, five hundred fifty thousand, sixty-four".