2687382987 has 4 divisors (see below), whose sum is σ = 3583177320. Its totient is φ = 1791588656.

The previous prime is 2687382977. The next prime is 2687383021. The reversal of 2687382987 is 7892837862.

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 2687382987 - 2²⁰ = 2686334411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2687382987.

It is not an unprimeable number, because it can be changed into a prime (2687382977) 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, 447897162 + ... + 447897167.

It is an arithmetic number, because the mean of its divisors is an integer number (895794330).

Almost surely, 2^2687382987 is an apocalyptic number.

2687382987 is a deficient number, since it is larger than the sum of its proper divisors (895794333).

2687382987 is an equidigital number, since it uses as much as digits as its factorization.

2687382987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895794332.

The product of its digits is 16257024, while the sum is 60.

The square root of 2687382987 is about 51839.9747974476. The cubic root of 2687382987 is about 1390.3042632247.

The spelling of 2687382987 in words is "two billion, six hundred eighty-seven million, three hundred eighty-two thousand, nine hundred eighty-seven".