651495560 has 64 divisors (see below), whose sum is σ = 1551960000. Its totient is φ = 245452032.

The previous prime is 651495517. The next prime is 651495569. The reversal of 651495560 is 65594156.

It is not an unprimeable number, because it can be changed into a prime (651495569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133646 + ... + 138434.

It is an arithmetic number, because the mean of its divisors is an integer number (24249375).

Almost surely, 2^651495560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651495560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775980000).

651495560 is an abundant number, since it is smaller than the sum of its proper divisors (900464440).

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

651495560 is a wasteful number, since it uses less digits than its factorization.

651495560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 651495560 is about 25524.4110607865. The cubic root of 651495560 is about 866.9029618671.

The spelling of 651495560 in words is "six hundred fifty-one million, four hundred ninety-five thousand, five hundred sixty".