13603855 has 8 divisors (see below), whose sum is σ = 16420032. Its totient is φ = 10819488.

The previous prime is 13603853. The next prime is 13603861. The reversal of 13603855 is 55830631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13603855 - 2¹ = 13603853 is a prime.

It is a super-2 number, since 2×13603855² = 370129741722050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13603853) 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 in 7 ways as a sum of consecutive naturals, for example, 6999 + ... + 8728.

It is an arithmetic number, because the mean of its divisors is an integer number (2052504).

Almost surely, 2^13603855 is an apocalyptic number.

13603855 is a deficient number, since it is larger than the sum of its proper divisors (2816177).

13603855 is a wasteful number, since it uses less digits than its factorization.

13603855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15905.

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

The square root of 13603855 is about 3688.3404127060. The cubic root of 13603855 is about 238.7191895769.

The spelling of 13603855 in words is "thirteen million, six hundred three thousand, eight hundred fifty-five".