2660628384 has 168 divisors, whose sum is σ = 8316790020. Its totient is φ = 834582528.

The previous prime is 2660628353. The next prime is 2660628391. The reversal of 2660628384 is 4838260662.

2660628384 is a `hidden beast` number, since 2 + 6 + 606 + 2 + 8 + 38 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2522048400 + 138579984 = 50220^2 + 11772^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 393222 + ... + 399930.

Almost surely, 2^2660628384 is an apocalyptic number.

2660628384 is a gapful number since it is divisible by the number (24) 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 2660628384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4158395010).

2660628384 is an abundant number, since it is smaller than the sum of its proper divisors (5656161636).

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

2660628384 is an equidigital number, since it uses as much as digits as its factorization.

2660628384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6754 (or 6731 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 2660628384 is about 51581.2793947572. The cubic root of 2660628384 is about 1385.6750798477.

The spelling of 2660628384 in words is "two billion, six hundred sixty million, six hundred twenty-eight thousand, three hundred eighty-four".