20011065 has 8 divisors (see below), whose sum is σ = 32017728. Its totient is φ = 10672560.

The previous prime is 20011037. The next prime is 20011067. The reversal of 20011065 is 56011002.

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

It is not a de Polignac number, because 20011065 - 2⁶ = 20011001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1334071 = 20011065 / (2 + 0 + 0 + 1 + 1 + 0 + 6 + 5).

It is not an unprimeable number, because it can be changed into a prime (20011067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667021 + ... + 667050.

It is an arithmetic number, because the mean of its divisors is an integer number (4002216).

Almost surely, 2^20011065 is an apocalyptic number.

It is an amenable number.

20011065 is a deficient number, since it is larger than the sum of its proper divisors (12006663).

20011065 is a wasteful number, since it uses less digits than its factorization.

20011065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334079.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 20011065 is about 4473.3728885484. The cubic root of 20011065 is about 271.4918108156.

Adding to 20011065 its reverse (56011002), we get a palindrome (76022067).

The spelling of 20011065 in words is "twenty million, eleven thousand, sixty-five".