2668520688 has 20 divisors (see below), whose sum is σ = 6893678568. Its totient is φ = 889506880.

The previous prime is 2668520663. The next prime is 2668520791. The reversal of 2668520688 is 8860258662.

2668520688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2668520688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27797043 + ... + 27797138.

Almost surely, 2^2668520688 is an apocalyptic number.

It is an amenable number.

2668520688 is an abundant number, since it is smaller than the sum of its proper divisors (4225157880).

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

2668520688 is a wasteful number, since it uses less digits than its factorization.

2668520688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55594192 (or 55594186 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The square root of 2668520688 is about 51657.7263146569. The cubic root of 2668520688 is about 1387.0438508987.

The spelling of 2668520688 in words is "two billion, six hundred sixty-eight million, five hundred twenty thousand, six hundred eighty-eight".