2686355868 has 24 divisors (see below), whose sum is σ = 7163615872. Its totient is φ = 767530224.

The previous prime is 2686355851. The next prime is 2686355887. The reversal of 2686355868 is 8685536862.

It is a congruent number.

It is an unprimeable number.

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, 15990130 + ... + 15990297.

Almost surely, 2^2686355868 is an apocalyptic number.

2686355868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2686355868 is an abundant number, since it is smaller than the sum of its proper divisors (4477260004).

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

2686355868 is a wasteful number, since it uses less digits than its factorization.

2686355868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980441 (or 31980439 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 57.

The square root of 2686355868 is about 51830.0672197133. The cubic root of 2686355868 is about 1390.1271156803.

The spelling of 2686355868 in words is "two billion, six hundred eighty-six million, three hundred fifty-five thousand, eight hundred sixty-eight".