651050660 has 48 divisors (see below), whose sum is σ = 1476604416. Its totient is φ = 239697792.

The previous prime is 651050657. The next prime is 651050681. The reversal of 651050660 is 66050156.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92009 + ... + 98831.

It is an arithmetic number, because the mean of its divisors is an integer number (30762592).

Almost surely, 2^651050660 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 651050660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738302208).

651050660 is an abundant number, since it is smaller than the sum of its proper divisors (825553756).

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

651050660 is a wasteful number, since it uses less digits than its factorization.

651050660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7212 (or 7210 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 651050660 is about 25515.6943860049. The cubic root of 651050660 is about 866.7055837225.

The spelling of 651050660 in words is "six hundred fifty-one million, fifty thousand, six hundred sixty".