2665754660 has 24 divisors (see below), whose sum is σ = 5599531896. Its totient is φ = 1066026240.

The previous prime is 2665754657. The next prime is 2665754669. The reversal of 2665754660 is 664575662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41036836 + 2624717824 = 6406^2 + 51232^2 .

It is not an unprimeable number, because it can be changed into a prime (2665754669) 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 7 ways as a sum of consecutive naturals, for example, 73814 + ... + 103826.

It is an arithmetic number, because the mean of its divisors is an integer number (233313829).

Almost surely, 2^2665754660 is an apocalyptic number.

2665754660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665754660 is an abundant number, since it is smaller than the sum of its proper divisors (2933777236).

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

2665754660 is a wasteful number, since it uses less digits than its factorization.

2665754660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34463 (or 34461 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The square root of 2665754660 is about 51630.9467277136. The cubic root of 2665754660 is about 1386.5644431496.

The spelling of 2665754660 in words is "two billion, six hundred sixty-five million, seven hundred fifty-four thousand, six hundred sixty".