2864871 has 6 divisors (see below), whose sum is σ = 4138160. Its totient is φ = 1909908.

The previous prime is 2864867. The next prime is 2864879. The reversal of 2864871 is 1784682.

2864871 is a `hidden beast` number, since 2 + 8 + 648 + 7 + 1 = 666.

It is not a de Polignac number, because 2864871 - 2² = 2864867 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 (2864879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159151 + ... + 159168.

2^2864871 is an apocalyptic number.

2864871 is a deficient number, since it is larger than the sum of its proper divisors (1273289).

2864871 is a wasteful number, since it uses less digits than its factorization.

2864871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318325 (or 318322 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 2864871 is about 1692.5929811978. The cubic root of 2864871 is about 142.0261639285.

The spelling of 2864871 in words is "two million, eight hundred sixty-four thousand, eight hundred seventy-one".