2686872209 has 8 divisors (see below), whose sum is σ = 3072785280. Its totient is φ = 2301477696.

The previous prime is 2686872203. The next prime is 2686872211. The reversal of 2686872209 is 9022786862.

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

It is not a de Polignac number, because 2686872209 - 2²⁴ = 2670094993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2686872203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118469 + ... + 139314.

It is an arithmetic number, because the mean of its divisors is an integer number (384098160).

Almost surely, 2^2686872209 is an apocalyptic number.

It is an amenable number.

2686872209 is a deficient number, since it is larger than the sum of its proper divisors (385913071).

2686872209 is a wasteful number, since it uses less digits than its factorization.

2686872209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259279.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 2686872209 is about 51835.0480756023. The cubic root of 2686872209 is about 1390.2161748218.

The spelling of 2686872209 in words is "two billion, six hundred eighty-six million, eight hundred seventy-two thousand, two hundred nine".