13727621 has 8 divisors (see below), whose sum is σ = 14159904. Its totient is φ = 13300560.

The previous prime is 13727611. The next prime is 13727639. The reversal of 13727621 is 12672731.

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 13727621 - 2¹⁸ = 13465477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13727611) 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, 4415 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (1769988).

Almost surely, 2^13727621 is an apocalyptic number.

It is an amenable number.

13727621 is a deficient number, since it is larger than the sum of its proper divisors (432283).

13727621 is a wasteful number, since it uses less digits than its factorization.

13727621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611.

The product of its digits is 3528, while the sum is 29.

The square root of 13727621 is about 3705.0804309758. The cubic root of 13727621 is about 239.4409499311.

The spelling of 13727621 in words is "thirteen million, seven hundred twenty-seven thousand, six hundred twenty-one".