2688645572 has 24 divisors (see below), whose sum is σ = 4745368320. Its totient is φ = 1332845280.

The previous prime is 2688645571. The next prime is 2688645587. The reversal of 2688645572 is 2755468862.

It is not an unprimeable number, because it can be changed into a prime (2688645571) 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, 920258 + ... + 923174.

It is an arithmetic number, because the mean of its divisors is an integer number (197723680).

Almost surely, 2^2688645572 is an apocalyptic number.

It is an amenable number.

2688645572 is a deficient number, since it is larger than the sum of its proper divisors (2056722748).

2688645572 is a wasteful number, since it uses less digits than its factorization.

2688645572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811 (or 4809 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 53.

The square root of 2688645572 is about 51852.1510836339. The cubic root of 2688645572 is about 1390.5219598320.

The spelling of 2688645572 in words is "two billion, six hundred eighty-eight million, six hundred forty-five thousand, five hundred seventy-two".