3653539 has 4 divisors (see below), whose sum is σ = 3694680. Its totient is φ = 3612400.

The previous prime is 3653509. The next prime is 3653557. The reversal of 3653539 is 9353563.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3653539 - 2¹¹ = 3651491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3653509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20437 + ... + 20614.

It is an arithmetic number, because the mean of its divisors is an integer number (923670).

Almost surely, 2^3653539 is an apocalyptic number.

3653539 is a deficient number, since it is larger than the sum of its proper divisors (41141).

3653539 is an equidigital number, since it uses as much as digits as its factorization.

3653539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41140.

The product of its digits is 36450, while the sum is 34.

The square root of 3653539 is about 1911.4232916861. The cubic root of 3653539 is about 154.0179183064.

The spelling of 3653539 in words is "three million, six hundred fifty-three thousand, five hundred thirty-nine".