2665827880 has 64 divisors (see below), whose sum is σ = 6290784000. Its totient is φ = 1014773760.

The previous prime is 2665827863. The next prime is 2665827881. The reversal of 2665827880 is 887285662.

2665827880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2665827881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175800 + ... + 190360.

It is an arithmetic number, because the mean of its divisors is an integer number (98293500).

Almost surely, 2^2665827880 is an apocalyptic number.

2665827880 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 2665827880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3145392000).

2665827880 is an abundant number, since it is smaller than the sum of its proper divisors (3624956120).

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

2665827880 is a wasteful number, since it uses less digits than its factorization.

2665827880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14794 (or 14790 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The square root of 2665827880 is about 51631.6557937086. The cubic root of 2665827880 is about 1386.5771379061.

The spelling of 2665827880 in words is "two billion, six hundred sixty-five million, eight hundred twenty-seven thousand, eight hundred eighty".