3665445 has 24 divisors (see below), whose sum is σ = 6823584. Its totient is φ = 1675296.

The previous prime is 3665443. The next prime is 3665477. The reversal of 3665445 is 5445663.

It is not a de Polignac number, because 3665445 - 2¹ = 3665443 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6⁵ + 6⁸ + 5³ + 4⁵ + 4⁶ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1759 + ... + 3228.

It is an arithmetic number, because the mean of its divisors is an integer number (284316).

Almost surely, 2^3665445 is an apocalyptic number.

3665445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3665445 is a deficient number, since it is larger than the sum of its proper divisors (3158139).

3665445 is a wasteful number, since it uses less digits than its factorization.

3665445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009 (or 5002 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 3665445 is about 1914.5351916327. The cubic root of 3665445 is about 154.1850392843.

The spelling of 3665445 in words is "three million, six hundred sixty-five thousand, four hundred forty-five".