3665043 has 12 divisors (see below), whose sum is σ = 5572840. Its totient is φ = 2314656.

The previous prime is 3665041. The next prime is 3665087. The reversal of 3665043 is 3405663.

3665043 is a `hidden beast` number, since 3 + 6 + 650 + 4 + 3 = 666.

It is not a de Polignac number, because 3665043 - 2¹ = 3665041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3664998 and 3665016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10546 + ... + 10887.

Almost surely, 2^3665043 is an apocalyptic number.

3665043 is a deficient number, since it is larger than the sum of its proper divisors (1907797).

3665043 is a wasteful number, since it uses less digits than its factorization.

3665043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21458 (or 21455 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 3665043 is about 1914.4302024362. The cubic root of 3665043 is about 154.1794024378.

Subtracting from 3665043 its product of nonzero digits (6480), we obtain a palindrome (3658563).

The spelling of 3665043 in words is "three million, six hundred sixty-five thousand, forty-three".