13287085 has 24 divisors (see below), whose sum is σ = 18710136. Its totient is φ = 9031680.

The previous prime is 13287083. The next prime is 13287101. The reversal of 13287085 is 58078231.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 12299049 = 994^2 + 3507^2 .

It is not a de Polignac number, because 13287085 - 2¹ = 13287083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13287085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13287083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47145 + ... + 47425.

It is an arithmetic number, because the mean of its divisors is an integer number (779589).

Almost surely, 2^13287085 is an apocalyptic number.

It is an amenable number.

13287085 is a deficient number, since it is larger than the sum of its proper divisors (5423051).

13287085 is a wasteful number, since it uses less digits than its factorization.

13287085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 13287085 is about 3645.1454017638. The cubic root of 13287085 is about 236.8517353806.

The spelling of 13287085 in words is "thirteen million, two hundred eighty-seven thousand, eighty-five".