13609986 has 16 divisors (see below), whose sum is σ = 29313984. Its totient is φ = 4187664.

The previous prime is 13609963. The next prime is 13610021. The reversal of 13609986 is 68990631.

It is an unprimeable number.

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, 87166 + ... + 87321.

It is an arithmetic number, because the mean of its divisors is an integer number (1832124).

Almost surely, 2^13609986 is an apocalyptic number.

13609986 is an abundant number, since it is smaller than the sum of its proper divisors (15703998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13609986 is a wasteful number, since it uses less digits than its factorization.

13609986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174505.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 13609986 is about 3689.1714516948. The cubic root of 13609986 is about 238.7550462645.

The spelling of 13609986 in words is "thirteen million, six hundred nine thousand, nine hundred eighty-six".