2660450688 has 192 divisors, whose sum is σ = 8929284000. Its totient is φ = 760015872.

The previous prime is 2660450677. The next prime is 2660450707. The reversal of 2660450688 is 8860540662.

2660450688 is a `hidden beast` number, since 2 + 6 + 60 + 4 + 506 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391770 + ... + 398502.

Almost surely, 2^2660450688 is an apocalyptic number.

2660450688 is a gapful number since it is divisible by the number (28) 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 2660450688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4464642000).

2660450688 is an abundant number, since it is smaller than the sum of its proper divisors (6268833312).

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

2660450688 is an equidigital number, since it uses as much as digits as its factorization.

2660450688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774 (or 6745 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 2660450688 is about 51579.5568806092. The cubic root of 2660450688 is about 1385.6442306941.

The spelling of 2660450688 in words is "two billion, six hundred sixty million, four hundred fifty thousand, six hundred eighty-eight".