13685530 has 16 divisors (see below), whose sum is σ = 24912360. Its totient is φ = 5412352.

The previous prime is 13685521. The next prime is 13685531. The reversal of 13685530 is 3558631.

It can be written as a sum of positive squares in 4 ways, for example, as 12880921 + 804609 = 3589^2 + 897^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13685492 and 13685501.

It is not an unprimeable number, because it can be changed into a prime (13685531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6799 + ... + 8578.

Almost surely, 2^13685530 is an apocalyptic number.

13685530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13685530 is a deficient number, since it is larger than the sum of its proper divisors (11226830).

13685530 is a wasteful number, since it uses less digits than its factorization.

13685530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15473.

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

The square root of 13685530 is about 3699.3958966296. The cubic root of 13685530 is about 239.1959784449.

The spelling of 13685530 in words is "thirteen million, six hundred eighty-five thousand, five hundred thirty".