136684686 has 8 divisors (see below), whose sum is σ = 273369384. Its totient is φ = 45561560.

The previous prime is 136684661. The next prime is 136684729. The reversal of 136684686 is 686486631.

It is a sphenic number, since it is the product of 3 distinct primes.

136684686 is an admirable number.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 11390385 + ... + 11390396.

It is an arithmetic number, because the mean of its divisors is an integer number (34171173).

Almost surely, 2^136684686 is an apocalyptic number.

136684686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

136684686 is a wasteful number, since it uses less digits than its factorization.

136684686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22780786.

The product of its digits is 995328, while the sum is 48.

The square root of 136684686 is about 11691.2226050144. Note that the first 3 decimals coincide. The cubic root of 136684686 is about 515.1178741718.

The spelling of 136684686 in words is "one hundred thirty-six million, six hundred eighty-four thousand, six hundred eighty-six".