136889 has 2 divisors, whose sum is σ = 136890. Its totient is φ = 136888.

The previous prime is 136883. The next prime is 136897. The reversal of 136889 is 988631.

136889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94864 + 42025 = 308^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 136889 - 2¹⁶ = 71353 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a zygodrome in base 7.

It is not a weakly prime, because it can be changed into another prime (136883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68444 + 68445.

It is an arithmetic number, because the mean of its divisors is an integer number (68445).

2¹³⁶⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

136889 is a deficient number, since it is larger than the sum of its proper divisors (1).

136889 is an equidigital number, since it uses as much as digits as its factorization.

136889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 136889 is about 369.9851348365. The cubic root of 136889 is about 51.5374409609.

The spelling of 136889 in words is "one hundred thirty-six thousand, eight hundred eighty-nine".