2660765328 has 160 divisors (see below), whose sum is σ = 8341966080. Its totient is φ = 807045120.

The previous prime is 2660765321. The next prime is 2660765329. The reversal of 2660765328 is 8235670662.

It is a happy number.

2660765328 is a `hidden beast` number, since 2 + 6 + 607 + 6 + 5 + 32 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (2660765321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395400 + ... + 402072.

It is an arithmetic number, because the mean of its divisors is an integer number (52137288).

Almost surely, 2^2660765328 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 2660765328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4170983040).

2660765328 is an abundant number, since it is smaller than the sum of its proper divisors (5681200752).

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

2660765328 is a wasteful number, since it uses less digits than its factorization.

2660765328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774 (or 6762 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 2660765328 is about 51582.6068360256. The cubic root of 2660765328 is about 1385.6988532582.

The spelling of 2660765328 in words is "two billion, six hundred sixty million, seven hundred sixty-five thousand, three hundred twenty-eight".