13688951 has 2 divisors, whose sum is σ = 13688952. Its totient is φ = 13688950.

The previous prime is 13688929. The next prime is 13688953. The reversal of 13688951 is 15988631.

13688951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (15988631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13688951 is a prime.

Together with 13688953, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13688899 and 13688908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13688953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6844475 + 6844476.

It is an arithmetic number, because the mean of its divisors is an integer number (6844476).

Almost surely, 2^13688951 is an apocalyptic number.

13688951 is a deficient number, since it is larger than the sum of its proper divisors (1).

13688951 is an equidigital number, since it uses as much as digits as its factorization.

13688951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 41.

The square root of 13688951 is about 3699.8582405276. The cubic root of 13688951 is about 239.2159075542.

The spelling of 13688951 in words is "thirteen million, six hundred eighty-eight thousand, nine hundred fifty-one".