13535643 has 8 divisors (see below), whose sum is σ = 19688256. Its totient is φ = 8203400.

The previous prime is 13535629. The next prime is 13535647. The reversal of 13535643 is 34653531.

It is a happy number.

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 13535643 - 2⁵ = 13535611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13535643.

It is not an unprimeable number, because it can be changed into a prime (13535647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205053 + ... + 205118.

It is an arithmetic number, because the mean of its divisors is an integer number (2461032).

Almost surely, 2^13535643 is an apocalyptic number.

13535643 is a deficient number, since it is larger than the sum of its proper divisors (6152613).

13535643 is a wasteful number, since it uses less digits than its factorization.

13535643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410185.

The product of its digits is 16200, while the sum is 30.

The square root of 13535643 is about 3679.0818148011. The cubic root of 13535643 is about 238.3195282184.

It can be divided in two parts, 1353 and 5643, that added together give a palindrome (6996).

The spelling of 13535643 in words is "thirteen million, five hundred thirty-five thousand, six hundred forty-three".