2665287884 has 24 divisors (see below), whose sum is σ = 5417965728. Its totient is φ = 1123539840.

The previous prime is 2665287881. The next prime is 2665287893. The reversal of 2665287884 is 4887825662.

It is a happy number.

2665287884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2665287881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778529 + ... + 781944.

It is an arithmetic number, because the mean of its divisors is an integer number (225748572).

Almost surely, 2^2665287884 is an apocalyptic number.

It is an amenable number.

2665287884 is an abundant number, since it is smaller than the sum of its proper divisors (2752677844).

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

2665287884 is a wasteful number, since it uses less digits than its factorization.

2665287884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560545 (or 1560543 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 56.

The square root of 2665287884 is about 51626.4262175874. The cubic root of 2665287884 is about 1386.4835088718.

The spelling of 2665287884 in words is "two billion, six hundred sixty-five million, two hundred eighty-seven thousand, eight hundred eighty-four".