2668764644 has 24 divisors (see below), whose sum is σ = 5748109248. Its totient is φ = 1055774880.

The previous prime is 2668764629. The next prime is 2668764667. The reversal of 2668764644 is 4464678662.

2668764644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3665522 + ... + 3666249.

It is an arithmetic number, because the mean of its divisors is an integer number (239504552).

Almost surely, 2^2668764644 is an apocalyptic number.

It is an amenable number.

2668764644 is an abundant number, since it is smaller than the sum of its proper divisors (3079344604).

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

2668764644 is a wasteful number, since it uses less digits than its factorization.

2668764644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331795 (or 7331793 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 53.

The square root of 2668764644 is about 51660.0875338012. The cubic root of 2668764644 is about 1387.0861174324.

The spelling of 2668764644 in words is "two billion, six hundred sixty-eight million, seven hundred sixty-four thousand, six hundred forty-four".