136878 has 16 divisors (see below), whose sum is σ = 312960. Its totient is φ = 39096.

The previous prime is 136861. The next prime is 136879. The reversal of 136878 is 878631.

136878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (19560).

2¹³⁶⁸⁷⁸ is an apocalyptic number.

136878 is an abundant number, since it is smaller than the sum of its proper divisors (176082).

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

136878 is a wasteful number, since it uses less digits than its factorization.

136878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271.

The product of its digits is 8064, while the sum is 33.

The square root of 136878 is about 369.9702690758. The cubic root of 136878 is about 51.5360604579.

It can be divided in two parts, 13687 and 8, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 136878 in words is "one hundred thirty-six thousand, eight hundred seventy-eight".