13559985 has 12 divisors (see below), whose sum is σ = 23504052. Its totient is φ = 7231968.

The previous prime is 13559983. The next prime is 13559993. The reversal of 13559985 is 58995531.

13559985 is a `hidden beast` number, since 1 + 3 + 559 + 98 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8946081 + 4613904 = 2991^2 + 2148^2 .

It is not a de Polignac number, because 13559985 - 2¹ = 13559983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 301333 = 13559985 / (1 + 3 + 5 + 5 + 9 + 9 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 13559985.

It is not an unprimeable number, because it can be changed into a prime (13559983) 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 11 ways as a sum of consecutive naturals, for example, 150622 + ... + 150711.

It is an arithmetic number, because the mean of its divisors is an integer number (1958671).

Almost surely, 2^13559985 is an apocalyptic number.

13559985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13559985 is a deficient number, since it is larger than the sum of its proper divisors (9944067).

13559985 is a wasteful number, since it uses less digits than its factorization.

13559985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301344 (or 301341 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 13559985 is about 3682.3884911834. The cubic root of 13559985 is about 238.4623043413.

The spelling of 13559985 in words is "thirteen million, five hundred fifty-nine thousand, nine hundred eighty-five".