13655859 has 32 divisors (see below), whose sum is σ = 22195200. Its totient is φ = 7451136.

The previous prime is 13655857. The next prime is 13655867. The reversal of 13655859 is 95855631.

It is not a de Polignac number, because 13655859 - 2¹ = 13655857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13655859.

It is not an unprimeable number, because it can be changed into a prime (13655857) 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 31 ways as a sum of consecutive naturals, for example, 23379 + ... + 23955.

It is an arithmetic number, because the mean of its divisors is an integer number (693600).

Almost surely, 2^13655859 is an apocalyptic number.

13655859 is a deficient number, since it is larger than the sum of its proper divisors (8539341).

13655859 is an equidigital number, since it uses as much as digits as its factorization.

13655859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 610 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 13655859 is about 3695.3834713058. The cubic root of 13655859 is about 239.0229899163.

The spelling of 13655859 in words is "thirteen million, six hundred fifty-five thousand, eight hundred fifty-nine".