13985647 has 8 divisors (see below), whose sum is σ = 15287216. Its totient is φ = 12716352.

The previous prime is 13985639. The next prime is 13985659. The reversal of 13985647 is 74658931.

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 13985647 - 2³ = 13985639 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 (13985617) 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, 7158 + ... + 8899.

It is an arithmetic number, because the mean of its divisors is an integer number (1910902).

Almost surely, 2^13985647 is an apocalyptic number.

13985647 is a deficient number, since it is larger than the sum of its proper divisors (1301569).

13985647 is a wasteful number, since it uses less digits than its factorization.

13985647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137.

The product of its digits is 181440, while the sum is 43.

The square root of 13985647 is about 3739.7388946289. The cubic root of 13985647 is about 240.9318345120.

The spelling of 13985647 in words is "thirteen million, nine hundred eighty-five thousand, six hundred forty-seven".