3565645 has 4 divisors (see below), whose sum is σ = 4278780. Its totient is φ = 2852512.

The previous prime is 3565619. The next prime is 3565669. The reversal of 3565645 is 5465653.

3565645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5465653 = 17 ⋅321509.

It can be written as a sum of positive squares in 2 ways, for example, as 1454436 + 2111209 = 1206^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 3565645 - 2⁵ = 3565613 is a prime.

It is a super-3 number, since 3×3565645³ (a number of 21 digits) contains 333 as substring.

3565645 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3565645.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 356560 + ... + 356569.

It is an arithmetic number, because the mean of its divisors is an integer number (1069695).

Almost surely, 2^3565645 is an apocalyptic number.

It is an amenable number.

3565645 is a deficient number, since it is larger than the sum of its proper divisors (713135).

3565645 is an equidigital number, since it uses as much as digits as its factorization.

3565645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713134.

The product of its digits is 54000, while the sum is 34.

The square root of 3565645 is about 1888.2915558780. The cubic root of 3565645 is about 152.7727984664.

The spelling of 3565645 in words is "three million, five hundred sixty-five thousand, six hundred forty-five".