2686669831 has 8 divisors (see below), whose sum is σ = 2705107184. Its totient is φ = 2668256640.

The previous prime is 2686669829. The next prime is 2686669837. The reversal of 2686669831 is 1389666862.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2686669831 - 2¹ = 2686669829 is a prime.

It is a super-2 number, since 2×2686669831² = 14436389561611137122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686669837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255151 + ... + 265471.

It is an arithmetic number, because the mean of its divisors is an integer number (338138398).

Almost surely, 2^2686669831 is an apocalyptic number.

2686669831 is a deficient number, since it is larger than the sum of its proper divisors (18437353).

2686669831 is a wasteful number, since it uses less digits than its factorization.

2686669831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12081.

The product of its digits is 4478976, while the sum is 55.

The square root of 2686669831 is about 51833.0959040650. The cubic root of 2686669831 is about 1390.1812697709.

The spelling of 2686669831 in words is "two billion, six hundred eighty-six million, six hundred sixty-nine thousand, eight hundred thirty-one".