2887665 has 48 divisors (see below), whose sum is σ = 5337024. Its totient is φ = 1330560.

The previous prime is 2887663. The next prime is 2887669. The reversal of 2887665 is 5667882.

It is not a de Polignac number, because 2887665 - 2¹ = 2887663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2887663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67134 + ... + 67176.

It is an arithmetic number, because the mean of its divisors is an integer number (111188).

2^2887665 is an apocalyptic number.

It is an amenable number.

2887665 is a deficient number, since it is larger than the sum of its proper divisors (2449359).

2887665 is a wasteful number, since it uses less digits than its factorization.

2887665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 99 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2887665 is about 1699.3130965187. The cubic root of 2887665 is about 142.4018406792.

The spelling of 2887665 in words is "two million, eight hundred eighty-seven thousand, six hundred sixty-five".