2871505705 has 4 divisors (see below), whose sum is σ = 3445806852. Its totient is φ = 2297204560.

The previous prime is 2871505699. The next prime is 2871505757. The reversal of 2871505705 is 5075051782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 289646361 + 2581859344 = 17019^2 + 50812^2 .

It is not a de Polignac number, because 2871505705 - 2¹⁵ = 2871472937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287150566 + ... + 287150575.

It is an arithmetic number, because the mean of its divisors is an integer number (861451713).

Almost surely, 2^2871505705 is an apocalyptic number.

It is an amenable number.

2871505705 is a deficient number, since it is larger than the sum of its proper divisors (574301147).

2871505705 is an equidigital number, since it uses as much as digits as its factorization.

2871505705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574301146.

The product of its (nonzero) digits is 98000, while the sum is 40.

The square root of 2871505705 is about 53586.4320980600. The cubic root of 2871505705 is about 1421.3571804274.

The spelling of 2871505705 in words is "two billion, eight hundred seventy-one million, five hundred five thousand, seven hundred five".