2688341686 has 8 divisors (see below), whose sum is σ = 4033431864. Its totient is φ = 1343864400.

The previous prime is 2688341681. The next prime is 2688341687. The reversal of 2688341686 is 6861438862.

2688341686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688341681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142095 + ... + 159898.

It is an arithmetic number, because the mean of its divisors is an integer number (504178983).

Almost surely, 2^2688341686 is an apocalyptic number.

2688341686 is a deficient number, since it is larger than the sum of its proper divisors (1345090178).

2688341686 is a wasteful number, since it uses less digits than its factorization.

2688341686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306446.

The product of its digits is 2654208, while the sum is 52.

The square root of 2688341686 is about 51849.2206884539. The cubic root of 2688341686 is about 1390.4695696271.

The spelling of 2688341686 in words is "two billion, six hundred eighty-eight million, three hundred forty-one thousand, six hundred eighty-six".