136856 has 8 divisors (see below), whose sum is σ = 256620. Its totient is φ = 68424.

The previous prime is 136849. The next prime is 136859. The reversal of 136856 is 658631.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136859) by changing a digit.

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 as a sum of consecutive naturals, namely, 8546 + ... + 8561.

2¹³⁶⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

136856 is a deficient number, since it is larger than the sum of its proper divisors (119764).

136856 is a wasteful number, since it uses less digits than its factorization.

136856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17113 (or 17109 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 136856 is about 369.9405357622. The cubic root of 136856 is about 51.5332992299.

The spelling of 136856 in words is "one hundred thirty-six thousand, eight hundred fifty-six".