136786 has 8 divisors (see below), whose sum is σ = 221004. Its totient is φ = 63120.

The previous prime is 136777. The next prime is 136811. The reversal of 136786 is 687631.

136786 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 625 = 369^2 + 25^2 .

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

It is an unprimeable number.

136786 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2605 + ... + 2656.

2¹³⁶⁷⁸⁶ is an apocalyptic number.

136786 is a deficient number, since it is larger than the sum of its proper divisors (84218).

136786 is a wasteful number, since it uses less digits than its factorization.

136786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276.

The product of its digits is 6048, while the sum is 31.

The square root of 136786 is about 369.8459138614. The cubic root of 136786 is about 51.5245115354.

The spelling of 136786 in words is "one hundred thirty-six thousand, seven hundred eighty-six".