2686868 has 6 divisors (see below), whose sum is σ = 4702026. Its totient is φ = 1343432.

The previous prime is 2686861. The next prime is 2686889. The reversal of 2686868 is 8686862.

It can be written as a sum of positive squares in only one way, i.e., 1567504 + 1119364 = 1252^2 + 1058^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686861) 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 as a sum of consecutive naturals, namely, 335855 + ... + 335862.

It is an arithmetic number, because the mean of its divisors is an integer number (783671).

2^2686868 is an apocalyptic number.

It is an amenable number.

2686868 is a deficient number, since it is larger than the sum of its proper divisors (2015158).

2686868 is a wasteful number, since it uses less digits than its factorization.

2686868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671721 (or 671719 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 2686868 is about 1639.1668615489. The cubic root of 2686868 is about 139.0215448894.

The spelling of 2686868 in words is "two million, six hundred eighty-six thousand, eight hundred sixty-eight".