13689541 has 2 divisors, whose sum is σ = 13689542. Its totient is φ = 13689540.

The previous prime is 13689517. The next prime is 13689547. The reversal of 13689541 is 14598631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 73441 = 3690^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 13689541 - 2¹¹ = 13687493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13689541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13689547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6844770 + 6844771.

It is an arithmetic number, because the mean of its divisors is an integer number (6844771).

Almost surely, 2^13689541 is an apocalyptic number.

It is an amenable number.

13689541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13689541 is an equidigital number, since it uses as much as digits as its factorization.

13689541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 13689541 is about 3699.9379724531. The cubic root of 13689541 is about 239.2193442762.

The spelling of 13689541 in words is "thirteen million, six hundred eighty-nine thousand, five hundred forty-one".