2865887 has 6 divisors (see below), whose sum is σ = 2905224. Its totient is φ = 2826980.

The previous prime is 2865881. The next prime is 2865899. The reversal of 2865887 is 7885682.

It is not a de Polignac number, because 2865887 - 2⁴ = 2865871 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 (2865881) 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, 17078 + ... + 17244.

It is an arithmetic number, because the mean of its divisors is an integer number (484204).

2^2865887 is an apocalyptic number.

2865887 is a deficient number, since it is larger than the sum of its proper divisors (39337).

2865887 is an equidigital number, since it uses as much as digits as its factorization.

2865887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 298 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The square root of 2865887 is about 1692.8930858149. The cubic root of 2865887 is about 142.0429513659.

The spelling of 2865887 in words is "two million, eight hundred sixty-five thousand, eight hundred eighty-seven".