3663539 has 4 divisors (see below), whose sum is σ = 3996600. Its totient is φ = 3330480.

The previous prime is 3663533. The next prime is 3663547. The reversal of 3663539 is 9353663.

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 3663539 - 2¹² = 3659443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3663499 and 3663508.

It is not an unprimeable number, because it can be changed into a prime (3663533) 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, 166514 + ... + 166535.

It is an arithmetic number, because the mean of its divisors is an integer number (999150).

Almost surely, 2^3663539 is an apocalyptic number.

3663539 is a deficient number, since it is larger than the sum of its proper divisors (333061).

3663539 is a wasteful number, since it uses less digits than its factorization.

3663539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333060.

The product of its digits is 43740, while the sum is 35.

The square root of 3663539 is about 1914.0373559573. The cubic root of 3663539 is about 154.1583096842.

The spelling of 3663539 in words is "three million, six hundred sixty-three thousand, five hundred thirty-nine".