2660686848 has 264 divisors, whose sum is σ = 8106775040. Its totient is φ = 839393280.

The previous prime is 2660686843. The next prime is 2660686901. The reversal of 2660686848 is 8486860662.

It is a happy number.

2660686848 is a `hidden beast` number, since 26 + 606 + 8 + 6 + 8 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2660686794 and 2660686803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660686843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19141563 + ... + 19141701.

Almost surely, 2^2660686848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2660686848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4053387520).

2660686848 is an abundant number, since it is smaller than the sum of its proper divisors (5446088192).

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

2660686848 is a wasteful number, since it uses less digits than its factorization.

2660686848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The square root of 2660686848 is about 51581.8461088783. The cubic root of 2660686848 is about 1385.6852292689.

The spelling of 2660686848 in words is "two billion, six hundred sixty million, six hundred eighty-six thousand, eight hundred forty-eight".