134881686 has 40 divisors (see below), whose sum is σ = 303412824. Its totient is φ = 44785440.

The previous prime is 134881679. The next prime is 134881751. The reversal of 134881686 is 686188431.

It is a happy number.

134881686 is a `hidden beast` number, since 1 + 3 + 488 + 168 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44041 + ... + 47003.

Almost surely, 2^134881686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134881686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151706412).

134881686 is an abundant number, since it is smaller than the sum of its proper divisors (168531138).

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

134881686 is a wasteful number, since it uses less digits than its factorization.

134881686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258 (or 3249 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 134881686 is about 11613.8574986953. The cubic root of 134881686 is about 512.8428779099.

The spelling of 134881686 in words is "one hundred thirty-four million, eight hundred eighty-one thousand, six hundred eighty-six".