13887668 has 6 divisors (see below), whose sum is σ = 24303426. Its totient is φ = 6943832.

The previous prime is 13887641. The next prime is 13887677. The reversal of 13887668 is 86678831.

It can be written as a sum of positive squares in only one way, i.e., 13337104 + 550564 = 3652^2 + 742^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1735955 + ... + 1735962.

It is an arithmetic number, because the mean of its divisors is an integer number (4050571).

Almost surely, 2^13887668 is an apocalyptic number.

It is an amenable number.

13887668 is a deficient number, since it is larger than the sum of its proper divisors (10415758).

13887668 is a wasteful number, since it uses less digits than its factorization.

13887668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471921 (or 3471919 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 13887668 is about 3726.6161594669. The cubic root of 13887668 is about 240.3678848723.

The spelling of 13887668 in words is "thirteen million, eight hundred eighty-seven thousand, six hundred sixty-eight".