2643795660 has 192 divisors, whose sum is σ = 8700088320. Its totient is φ = 592945920.

The previous prime is 2643795659. The next prime is 2643795673. The reversal of 2643795660 is 665973462.

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 63 ways as a sum of consecutive naturals, for example, 536769 + ... + 541671.

It is an arithmetic number, because the mean of its divisors is an integer number (45312960).

Almost surely, 2^2643795660 is an apocalyptic number.

2643795660 is a gapful number since it is divisible by the number (20) 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 2643795660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4350044160).

2643795660 is an abundant number, since it is smaller than the sum of its proper divisors (6056292660).

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

2643795660 is a wasteful number, since it uses less digits than its factorization.

2643795660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 48.

The square root of 2643795660 is about 51417.8535141248. The cubic root of 2643795660 is about 1382.7466928842.

The spelling of 2643795660 in words is "two billion, six hundred forty-three million, seven hundred ninety-five thousand, six hundred sixty".