136641227 has 4 divisors (see below), whose sum is σ = 138957240. Its totient is φ = 134325216.

The previous prime is 136641221. The next prime is 136641251. The reversal of 136641227 is 722146631.

136641227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722146631 = 5303 ⋅136177.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136641227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136641193 and 136641202.

It is not an unprimeable number, because it can be changed into a prime (136641221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157918 + ... + 1158035.

It is an arithmetic number, because the mean of its divisors is an integer number (34739310).

Almost surely, 2^136641227 is an apocalyptic number.

136641227 is a deficient number, since it is larger than the sum of its proper divisors (2316013).

136641227 is an equidigital number, since it uses as much as digits as its factorization.

136641227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316012.

The product of its digits is 12096, while the sum is 32.

The square root of 136641227 is about 11689.3638406887. The cubic root of 136641227 is about 515.0632743446.

Adding to 136641227 its reverse (722146631), we get a palindrome (858787858).

The spelling of 136641227 in words is "one hundred thirty-six million, six hundred forty-one thousand, two hundred twenty-seven".