13605853 has 2 divisors, whose sum is σ = 13605854. Its totient is φ = 13605852.

The previous prime is 13605847. The next prime is 13605863. The reversal of 13605853 is 35850631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8139609 + 5466244 = 2853^2 + 2338^2 .

It is a cyclic number.

It is not a de Polignac number, because 13605853 - 2⁵ = 13605821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13605803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6802926 + 6802927.

It is an arithmetic number, because the mean of its divisors is an integer number (6802927).

Almost surely, 2^13605853 is an apocalyptic number.

It is an amenable number.

13605853 is a deficient number, since it is larger than the sum of its proper divisors (1).

13605853 is an equidigital number, since it uses as much as digits as its factorization.

13605853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 13605853 is about 3688.6112562860. The cubic root of 13605853 is about 238.7308759112.

The spelling of 13605853 in words is "thirteen million, six hundred five thousand, eight hundred fifty-three".