10006565 has 4 divisors (see below), whose sum is σ = 12007884. Its totient is φ = 8005248.

The previous prime is 10006547. The next prime is 10006567. The reversal of 10006565 is 56560001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7491169 + 2515396 = 2737^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 10006565 - 2²⁰ = 8957989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10006565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10006567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000652 + ... + 1000661.

It is an arithmetic number, because the mean of its divisors is an integer number (3001971).

Almost surely, 2^10006565 is an apocalyptic number.

It is an amenable number.

10006565 is a deficient number, since it is larger than the sum of its proper divisors (2001319).

10006565 is an equidigital number, since it uses as much as digits as its factorization.

10006565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001318.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 10006565 is about 3163.3155075016. The cubic root of 10006565 is about 215.4906049023.

Adding to 10006565 its reverse (56560001), we get a palindrome (66566566).

The spelling of 10006565 in words is "ten million, six thousand, five hundred sixty-five".