16020565 has 16 divisors (see below), whose sum is σ = 21332160. Its totient is φ = 11451520.

The previous prime is 16020559. The next prime is 16020569. The reversal of 16020565 is 56502061.

It is not a de Polignac number, because 16020565 - 2⁵ = 16020533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020569) 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 15 ways as a sum of consecutive naturals, for example, 777 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1333260).

Almost surely, 2^16020565 is an apocalyptic number.

It is an amenable number.

16020565 is a deficient number, since it is larger than the sum of its proper divisors (5311595).

16020565 is a wasteful number, since it uses less digits than its factorization.

16020565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 16020565 is about 4002.5697995163. The cubic root of 16020565 is about 252.0921232430.

It can be divided in two parts, 1602056 and 5, that added together give a palindrome (1602061).

The spelling of 16020565 in words is "sixteen million, twenty thousand, five hundred sixty-five".