2688166652 has 24 divisors (see below), whose sum is σ = 4741173360. Its totient is φ = 1333584000.

The previous prime is 2688166609. The next prime is 2688166669. The reversal of 2688166652 is 2566618862.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2688166652.

It is a congruent number.

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, 294152 + ... + 303152.

It is an arithmetic number, because the mean of its divisors is an integer number (197548890).

Almost surely, 2^2688166652 is an apocalyptic number.

It is an amenable number.

2688166652 is a deficient number, since it is larger than the sum of its proper divisors (2053006708).

2688166652 is a wasteful number, since it uses less digits than its factorization.

2688166652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581 (or 9579 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 2688166652 is about 51847.5327474703. The cubic root of 2688166652 is about 1390.4393918247.

The spelling of 2688166652 in words is "two billion, six hundred eighty-eight million, one hundred sixty-six thousand, six hundred fifty-two".