13688771 has 2 divisors, whose sum is σ = 13688772. Its totient is φ = 13688770.

The previous prime is 13688761. The next prime is 13688789. The reversal of 13688771 is 17788631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13688771 - 2¹⁴ = 13672387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13688761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6844385 + 6844386.

It is an arithmetic number, because the mean of its divisors is an integer number (6844386).

Almost surely, 2^13688771 is an apocalyptic number.

13688771 is a deficient number, since it is larger than the sum of its proper divisors (1).

13688771 is an equidigital number, since it uses as much as digits as its factorization.

13688771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 13688771 is about 3699.8339151913. The cubic root of 13688771 is about 239.2148590431.

The spelling of 13688771 in words is "thirteen million, six hundred eighty-eight thousand, seven hundred seventy-one".