13604887 has 2 divisors, whose sum is σ = 13604888. Its totient is φ = 13604886.

The previous prime is 13604881. The next prime is 13604897. The reversal of 13604887 is 78840631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13604887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13604881) by changing a digit.

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, 6802443 + 6802444.

It is an arithmetic number, because the mean of its divisors is an integer number (6802444).

Almost surely, 2^13604887 is an apocalyptic number.

13604887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13604887 is an equidigital number, since it uses as much as digits as its factorization.

13604887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 13604887 is about 3688.4803103717. The cubic root of 13604887 is about 238.7252259045.

The spelling of 13604887 in words is "thirteen million, six hundred four thousand, eight hundred eighty-seven".