136561344 has 56 divisors (see below), whose sum is σ = 362638848. Its totient is φ = 45354240.

The previous prime is 136561301. The next prime is 136561349. The reversal of 136561344 is 443165631.

136561344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (136561349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58569 + ... + 60855.

Almost surely, 2^136561344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136561344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181319424).

136561344 is an abundant number, since it is smaller than the sum of its proper divisors (226077504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136561344 is a wasteful number, since it uses less digits than its factorization.

136561344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613 (or 2603 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 136561344 is about 11685.9464315048. The cubic root of 136561344 is about 514.9628829252.

The spelling of 136561344 in words is "one hundred thirty-six million, five hundred sixty-one thousand, three hundred forty-four".