16065565 has 16 divisors (see below), whose sum is σ = 20159280. Its totient is φ = 12275200.

The previous prime is 16065559. The next prime is 16065571. The reversal of 16065565 is 56556061.

16065565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16065559) and next prime (16065571).

It can be written as a sum of positive squares in 8 ways, for example, as 241081 + 15824484 = 491^2 + 3978^2 .

It is not a de Polignac number, because 16065565 - 2³ = 16065557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16065565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14097 + ... + 15193.

It is an arithmetic number, because the mean of its divisors is an integer number (1259955).

Almost surely, 2^16065565 is an apocalyptic number.

It is an amenable number.

16065565 is a deficient number, since it is larger than the sum of its proper divisors (4093715).

16065565 is a wasteful number, since it uses less digits than its factorization.

16065565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 16065565 is about 4008.1872461251. The cubic root of 16065565 is about 252.3279355798.

The spelling of 16065565 in words is "sixteen million, sixty-five thousand, five hundred sixty-five".