13886681 has 2 divisors, whose sum is σ = 13886682. Its totient is φ = 13886680.

The previous prime is 13886669. The next prime is 13886693. The reversal of 13886681 is 18668831.

It is a balanced prime because it is at equal distance from previous prime (13886669) and next prime (13886693).

It can be written as a sum of positive squares in only one way, i.e., 7840000 + 6046681 = 2800^2 + 2459^2 .

It is a cyclic number.

It is not a de Polignac number, because 13886681 - 2¹⁸ = 13624537 is a prime.

It is a super-2 number, since 2×13886681² = 385679818391522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (13886611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6943340 + 6943341.

It is an arithmetic number, because the mean of its divisors is an integer number (6943341).

Almost surely, 2^13886681 is an apocalyptic number.

It is an amenable number.

13886681 is a deficient number, since it is larger than the sum of its proper divisors (1).

13886681 is an equidigital number, since it uses as much as digits as its factorization.

13886681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 13886681 is about 3726.4837313478. The cubic root of 13886681 is about 240.3621904024.

The spelling of 13886681 in words is "thirteen million, eight hundred eighty-six thousand, six hundred eighty-one".