2889665 has 16 divisors (see below), whose sum is σ = 3634176. Its totient is φ = 2203200.

The previous prime is 2889641. The next prime is 2889683. The reversal of 2889665 is 5669882.

2889665 = 52² + 53² + ... + 206².

It is a happy number.

It is not a de Polignac number, because 2889665 - 2¹² = 2885569 is a prime.

It is a Duffinian number.

Its product of digits (207360) is a multiple of the sum of its prime divisors (320).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15875 + ... + 16055.

It is an arithmetic number, because the mean of its divisors is an integer number (227136).

2^2889665 is an apocalyptic number.

It is an amenable number.

2889665 is a deficient number, since it is larger than the sum of its proper divisors (744511).

2889665 is a wasteful number, since it uses less digits than its factorization.

2889665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its digits is 207360, while the sum is 44.

The square root of 2889665 is about 1699.9014677328. The cubic root of 2889665 is about 142.4347089834.

The spelling of 2889665 in words is "two million, eight hundred eighty-nine thousand, six hundred sixty-five".