2686668 has 24 divisors (see below), whose sum is σ = 6301680. Its totient is φ = 890880.

The previous prime is 2686667. The next prime is 2686669. The reversal of 2686668 is 8666862.

It is an interprime number because it is at equal distance from previous prime (2686667) and next prime (2686669).

It is not an unprimeable number, because it can be changed into a prime (2686667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2428 + ... + 3356.

It is an arithmetic number, because the mean of its divisors is an integer number (262570).

2^2686668 is an apocalyptic number.

It is an amenable number.

2686668 is an abundant number, since it is smaller than the sum of its proper divisors (3615012).

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

2686668 is a wasteful number, since it uses less digits than its factorization.

2686668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1175 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 2686668 is about 1639.1058538118. The cubic root of 2686668 is about 139.0180953962.

The spelling of 2686668 in words is "two million, six hundred eighty-six thousand, six hundred sixty-eight".