2665840652 has 24 divisors (see below), whose sum is σ = 4972816800. Its totient is φ = 1246088960.

The previous prime is 2665840651. The next prime is 2665840663. The reversal of 2665840652 is 2560485662.

It is not an unprimeable number, because it can be changed into a prime (2665840651) 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, 121424 + ... + 141687.

It is an arithmetic number, because the mean of its divisors is an integer number (207200700).

Almost surely, 2^2665840652 is an apocalyptic number.

It is an amenable number.

2665840652 is a deficient number, since it is larger than the sum of its proper divisors (2306976148).

2665840652 is a wasteful number, since it uses less digits than its factorization.

2665840652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263281 (or 263279 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The square root of 2665840652 is about 51631.7794773723. The cubic root of 2665840652 is about 1386.5793522695.

The spelling of 2665840652 in words is "two billion, six hundred sixty-five million, eight hundred forty thousand, six hundred fifty-two".