13608539 has 8 divisors (see below), whose sum is σ = 15575520. Its totient is φ = 11647296.

The previous prime is 13608533. The next prime is 13608583. The reversal of 13608539 is 93580631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13608539 - 2⁴ = 13608523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13608499 and 13608508.

It is not an unprimeable number, because it can be changed into a prime (13608533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6887 + ... + 8639.

It is an arithmetic number, because the mean of its divisors is an integer number (1946940).

Almost surely, 2^13608539 is an apocalyptic number.

13608539 is a deficient number, since it is larger than the sum of its proper divisors (1966981).

13608539 is a wasteful number, since it uses less digits than its factorization.

13608539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 13608539 is about 3688.9753319858. The cubic root of 13608539 is about 238.7465845660.

The spelling of 13608539 in words is "thirteen million, six hundred eight thousand, five hundred thirty-nine".