2871771 has 8 divisors (see below), whose sum is σ = 4376064. Its totient is φ = 1641000.

The previous prime is 2871767. The next prime is 2871797. The reversal of 2871771 is 1771782.

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

It is not a de Polignac number, because 2871771 - 2² = 2871767 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2871771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2871721) 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, 68355 + ... + 68396.

It is an arithmetic number, because the mean of its divisors is an integer number (547008).

2^2871771 is an apocalyptic number.

2871771 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2871771 is a deficient number, since it is larger than the sum of its proper divisors (1504293).

2871771 is a wasteful number, since it uses less digits than its factorization.

2871771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136761.

The product of its digits is 5488, while the sum is 33.

The square root of 2871771 is about 1694.6300481226. The cubic root of 2871771 is about 142.1400951580.

The spelling of 2871771 in words is "two million, eight hundred seventy-one thousand, seven hundred seventy-one".