136873265 has 4 divisors (see below), whose sum is σ = 164247924. Its totient is φ = 109498608.

The previous prime is 136873213. The next prime is 136873291. The reversal of 136873265 is 562378631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562378631 = 5189 ⋅108379.

It can be written as a sum of positive squares in 2 ways, for example, as 55368481 + 81504784 = 7441^2 + 9028^2 .

It is a cyclic number.

It is not a de Polignac number, because 136873265 - 2⁶ = 136873201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13687322 + ... + 13687331.

It is an arithmetic number, because the mean of its divisors is an integer number (41061981).

Almost surely, 2^136873265 is an apocalyptic number.

It is an amenable number.

136873265 is a deficient number, since it is larger than the sum of its proper divisors (27374659).

136873265 is an equidigital number, since it uses as much as digits as its factorization.

136873265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27374658.

The product of its digits is 181440, while the sum is 41.

The square root of 136873265 is about 11699.2848072008. The cubic root of 136873265 is about 515.3546619128.

The spelling of 136873265 in words is "one hundred thirty-six million, eight hundred seventy-three thousand, two hundred sixty-five".