2863871 has 4 divisors (see below), whose sum is σ = 3032352. Its totient is φ = 2695392.

The previous prime is 2863867. The next prime is 2863877. The reversal of 2863871 is 1783682.

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 2863871 - 2² = 2863867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863877) 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, 84215 + ... + 84248.

It is an arithmetic number, because the mean of its divisors is an integer number (758088).

2^2863871 is an apocalyptic number.

2863871 is a deficient number, since it is larger than the sum of its proper divisors (168481).

2863871 is a wasteful number, since it uses less digits than its factorization.

2863871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168480.

The product of its digits is 16128, while the sum is 35.

The square root of 2863871 is about 1692.2975506689. The cubic root of 2863871 is about 142.0096369840.

The spelling of 2863871 in words is "two million, eight hundred sixty-three thousand, eight hundred seventy-one".