13966217 has 8 divisors (see below), whose sum is σ = 14280000. Its totient is φ = 13655664.

The previous prime is 13966207. The next prime is 13966219. The reversal of 13966217 is 71266931.

13966217 is digitally balanced in base 2, 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 13966217 - 2⁴ = 13966201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13966219) 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, 9284 + ... + 10682.

It is an arithmetic number, because the mean of its divisors is an integer number (1785000).

Almost surely, 2^13966217 is an apocalyptic number.

It is an amenable number.

13966217 is a deficient number, since it is larger than the sum of its proper divisors (313783).

13966217 is a wasteful number, since it uses less digits than its factorization.

13966217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615.

The product of its digits is 13608, while the sum is 35.

The square root of 13966217 is about 3737.1402167968. The cubic root of 13966217 is about 240.8202087597.

The spelling of 13966217 in words is "thirteen million, nine hundred sixty-six thousand, two hundred seventeen".