13546721 has 8 divisors (see below), whose sum is σ = 14047488. Its totient is φ = 13050000.

The previous prime is 13546711. The next prime is 13546751. The reversal of 13546721 is 12764531.

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 13546721 - 2⁶ = 13546657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13546711) 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, 6911 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (1755936).

Almost surely, 2^13546721 is an apocalyptic number.

It is an amenable number.

13546721 is a deficient number, since it is larger than the sum of its proper divisors (500767).

13546721 is a wasteful number, since it uses less digits than its factorization.

13546721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its digits is 5040, while the sum is 29.

The square root of 13546721 is about 3680.5870455676. The cubic root of 13546721 is about 238.3845265789.

The spelling of 13546721 in words is "thirteen million, five hundred forty-six thousand, seven hundred twenty-one".