2089565 has 8 divisors (see below), whose sum is σ = 2568888. Its totient is φ = 1630720.

The previous prime is 2089559. The next prime is 2089567. The reversal of 2089565 is 5659802.

It can be written as a sum of positive squares in 4 ways, for example, as 47524 + 2042041 = 218^2 + 1429^2 .

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

It is not a de Polignac number, because 2089565 - 2¹² = 2085469 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 (2089567) 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, 4892 + ... + 5301.

It is an arithmetic number, because the mean of its divisors is an integer number (321111).

2^2089565 is an apocalyptic number.

It is an amenable number.

2089565 is a deficient number, since it is larger than the sum of its proper divisors (479323).

2089565 is a wasteful number, since it uses less digits than its factorization.

2089565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10239.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2089565 is about 1445.5327737551. The cubic root of 2089565 is about 127.8454555713.

The spelling of 2089565 in words is "two million, eighty-nine thousand, five hundred sixty-five".