2688166671 has 8 divisors (see below), whose sum is σ = 3617720064. Its totient is φ = 1775362200.

The previous prime is 2688166669. The next prime is 2688166693. The reversal of 2688166671 is 1766618862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2688166671 - 2¹ = 2688166669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688162671) 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, 4186855 + ... + 4187496.

It is an arithmetic number, because the mean of its divisors is an integer number (452215008).

Almost surely, 2^2688166671 is an apocalyptic number.

2688166671 is a deficient number, since it is larger than the sum of its proper divisors (929553393).

2688166671 is a wasteful number, since it uses less digits than its factorization.

2688166671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8374461.

The product of its digits is 1161216, while the sum is 51.

The square root of 2688166671 is about 51847.5329306998. The cubic root of 2688166671 is about 1390.4393951006.

The spelling of 2688166671 in words is "two billion, six hundred eighty-eight million, one hundred sixty-six thousand, six hundred seventy-one".