20003065 has 8 divisors (see below), whose sum is σ = 24410880. Its totient is φ = 15730992.

The previous prime is 20003063. The next prime is 20003089. The reversal of 20003065 is 56030002.

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

It is a cyclic number.

It is not a de Polignac number, because 20003065 - 2¹ = 20003063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20003063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33609 + ... + 34198.

It is an arithmetic number, because the mean of its divisors is an integer number (3051360).

Almost surely, 2^20003065 is an apocalyptic number.

It is an amenable number.

20003065 is a deficient number, since it is larger than the sum of its proper divisors (4407815).

20003065 is an equidigital number, since it uses as much as digits as its factorization.

20003065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67871.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20003065 is about 4472.4786192893. The cubic root of 20003065 is about 271.4556271012.

Adding to 20003065 its reverse (56030002), we get a palindrome (76033067).

The spelling of 20003065 in words is "twenty million, three thousand, sixty-five".