3613965 has 16 divisors (see below), whose sum is σ = 5816448. Its totient is φ = 1916096.

The previous prime is 3613963. The next prime is 3613991. The reversal of 3613965 is 5693163.

3613965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3613965 - 2¹ = 3613963 is a prime.

It is a Smith number, since the sum of its digits (33) 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 (3613963) 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 15 ways as a sum of consecutive naturals, for example, 2344 + ... + 3566.

It is an arithmetic number, because the mean of its divisors is an integer number (363528).

Almost surely, 2^3613965 is an apocalyptic number.

It is an amenable number.

3613965 is a deficient number, since it is larger than the sum of its proper divisors (2202483).

3613965 is a wasteful number, since it uses less digits than its factorization.

3613965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its digits is 14580, while the sum is 33.

The square root of 3613965 is about 1901.0431347026. The cubic root of 3613965 is about 153.4598069106.

The spelling of 3613965 in words is "three million, six hundred thirteen thousand, nine hundred sixty-five".