2668815740 has 24 divisors (see below), whose sum is σ = 5607206640. Its totient is φ = 1067013248.

The previous prime is 2668815701. The next prime is 2668815749. The reversal of 2668815740 is 475188662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668815749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12071 + ... + 74049.

It is an arithmetic number, because the mean of its divisors is an integer number (233633610).

Almost surely, 2^2668815740 is an apocalyptic number.

2668815740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2668815740 is an abundant number, since it is smaller than the sum of its proper divisors (2938390900).

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

2668815740 is a wasteful number, since it uses less digits than its factorization.

2668815740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64141 (or 64139 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2668815740 is about 51660.5820718273. The cubic root of 2668815740 is about 1387.0949697304.

The spelling of 2668815740 in words is "two billion, six hundred sixty-eight million, eight hundred fifteen thousand, seven hundred forty".