2687111385 has 64 divisors (see below), whose sum is σ = 5243320320. Its totient is φ = 1147737600.

The previous prime is 2687111327. The next prime is 2687111389. The reversal of 2687111385 is 5831117862.

It is not a de Polignac number, because 2687111385 - 2⁷ = 2687111257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2687111389) 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 63 ways as a sum of consecutive naturals, for example, 136410 + ... + 154860.

It is an arithmetic number, because the mean of its divisors is an integer number (81926880).

Almost surely, 2^2687111385 is an apocalyptic number.

It is an amenable number.

2687111385 is a deficient number, since it is larger than the sum of its proper divisors (2556208935).

2687111385 is a wasteful number, since it uses less digits than its factorization.

2687111385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18558.

The product of its digits is 80640, while the sum is 42.

The square root of 2687111385 is about 51837.3551119268. The cubic root of 2687111385 is about 1390.2574243308.

The spelling of 2687111385 in words is "two billion, six hundred eighty-seven million, one hundred eleven thousand, three hundred eighty-five".