13605855 has 16 divisors (see below), whose sum is σ = 21917184. Its totient is φ = 7207200.

The previous prime is 13605853. The next prime is 13605863. The reversal of 13605855 is 55850631.

It is not a de Polignac number, because 13605855 - 2¹ = 13605853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13605853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (1369824).

Almost surely, 2^13605855 is an apocalyptic number.

13605855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13605855 is a deficient number, since it is larger than the sum of its proper divisors (8311329).

13605855 is a wasteful number, since it uses less digits than its factorization.

13605855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 13605855 is about 3688.6115273908. The cubic root of 13605855 is about 238.7308876087.

The spelling of 13605855 in words is "thirteen million, six hundred five thousand, eight hundred fifty-five".