136898 has 4 divisors (see below), whose sum is σ = 205350. Its totient is φ = 68448.

The previous prime is 136897. The next prime is 136943. The reversal of 136898 is 898631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898631 = 293 ⋅3067.

It can be written as a sum of positive squares in only one way, i.e., 134689 + 2209 = 367^2 + 47^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136897) 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, 34223 + ... + 34226.

2¹³⁶⁸⁹⁸ is an apocalyptic number.

136898 is a deficient number, since it is larger than the sum of its proper divisors (68452).

136898 is an equidigital number, since it uses as much as digits as its factorization.

136898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68451.

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

The square root of 136898 is about 369.9972972874. The cubic root of 136898 is about 51.5385704083.

The spelling of 136898 in words is "one hundred thirty-six thousand, eight hundred ninety-eight".