2665289 has 8 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 2398000.

The previous prime is 2665261. The next prime is 2665291. The reversal of 2665289 is 9825662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2665289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89 + ... + 2310.

It is an arithmetic number, because the mean of its divisors is an integer number (367200).

2^2665289 is an apocalyptic number.

It is an amenable number.

2665289 is a deficient number, since it is larger than the sum of its proper divisors (272311).

2665289 is a wasteful number, since it uses less digits than its factorization.

2665289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its digits is 51840, while the sum is 38.

The square root of 2665289 is about 1632.5712848142. The cubic root of 2665289 is about 138.6483702386.

It can be divided in two parts, 266 and 5289, that added together give a palindrome (5555).

The spelling of 2665289 in words is "two million, six hundred sixty-five thousand, two hundred eighty-nine".