1066565 has 16 divisors (see below), whose sum is σ = 1372800. Its totient is φ = 793152.

The previous prime is 1066561. The next prime is 1066567. The reversal of 1066565 is 5656601.

It is a cyclic number.

It is not a de Polignac number, because 1066565 - 2² = 1066561 is a prime.

It is a super-2 number, since 2×1066565² = 2275121798450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9731 + ... + 9839.

It is an arithmetic number, because the mean of its divisors is an integer number (85800).

2^1066565 is an apocalyptic number.

It is an amenable number.

1066565 is a deficient number, since it is larger than the sum of its proper divisors (306235).

1066565 is a wasteful number, since it uses less digits than its factorization.

1066565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1066565 is about 1032.7463386524. The cubic root of 1066565 is about 102.1713447108.

The spelling of 1066565 in words is "one million, sixty-six thousand, five hundred sixty-five".