2687841587 has 4 divisors (see below), whose sum is σ = 2688566496. Its totient is φ = 2687116680.

The previous prime is 2687841581. The next prime is 2687841601. The reversal of 2687841587 is 7851487862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2687841587 - 2³⁰ = 1614099763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2687841581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356864 + ... + 364317.

It is an arithmetic number, because the mean of its divisors is an integer number (672141624).

Almost surely, 2^2687841587 is an apocalyptic number.

2687841587 is a deficient number, since it is larger than the sum of its proper divisors (724909).

2687841587 is an equidigital number, since it uses as much as digits as its factorization.

2687841587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724908.

The product of its digits is 6021120, while the sum is 56.

The square root of 2687841587 is about 51844.3978362176. The cubic root of 2687841587 is about 1390.3833435386.

The spelling of 2687841587 in words is "two billion, six hundred eighty-seven million, eight hundred forty-one thousand, five hundred eighty-seven".