651300660 has 144 divisors (see below), whose sum is σ = 2096115840. Its totient is φ = 163342080.

The previous prime is 651300649. The next prime is 651300697. The reversal of 651300660 is 66003156.

651300660 is a `hidden beast` number, since 651 + 3 + 0 + 0 + 6 + 6 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251251 + ... + 253829.

It is an arithmetic number, because the mean of its divisors is an integer number (14556360).

Almost surely, 2^651300660 is an apocalyptic number.

651300660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651300660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048057920).

651300660 is an abundant number, since it is smaller than the sum of its proper divisors (1444815180).

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

651300660 is a wasteful number, since it uses less digits than its factorization.

651300660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 651300660 is about 25520.5928614521. The cubic root of 651300660 is about 866.8165063081.

The spelling of 651300660 in words is "six hundred fifty-one million, three hundred thousand, six hundred sixty".