13516643 has 8 divisors (see below), whose sum is σ = 15739488. Its totient is φ = 11366784.

The previous prime is 13516627. The next prime is 13516661. The reversal of 13516643 is 34661531.

It is a happy number.

13516643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13516643 - 2⁴ = 13516627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13516603) 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, 17846 + ... + 18587.

It is an arithmetic number, because the mean of its divisors is an integer number (1967436).

Almost surely, 2^13516643 is an apocalyptic number.

13516643 is a deficient number, since it is larger than the sum of its proper divisors (2222845).

13516643 is an equidigital number, since it uses as much as digits as its factorization.

13516643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36493.

The product of its digits is 6480, while the sum is 29.

The square root of 13516643 is about 3676.4987420098. The cubic root of 13516643 is about 238.2079661897.

The spelling of 13516643 in words is "thirteen million, five hundred sixteen thousand, six hundred forty-three".