136413565 has 4 divisors (see below), whose sum is σ = 163696284. Its totient is φ = 109130848.

The previous prime is 136413539. The next prime is 136413569. The reversal of 136413565 is 565314631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43599609 + 92813956 = 6603^2 + 9634^2 .

It is a cyclic number.

It is not a de Polignac number, because 136413565 - 2¹⁹ = 135889277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136413565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136413569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13641352 + ... + 13641361.

It is an arithmetic number, because the mean of its divisors is an integer number (40924071).

Almost surely, 2^136413565 is an apocalyptic number.

It is an amenable number.

136413565 is a deficient number, since it is larger than the sum of its proper divisors (27282719).

136413565 is an equidigital number, since it uses as much as digits as its factorization.

136413565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27282718.

The product of its digits is 32400, while the sum is 34.

The square root of 136413565 is about 11679.6217832599. The cubic root of 136413565 is about 514.7770612649. Note that the first 3 decimals are identical.

The spelling of 136413565 in words is "one hundred thirty-six million, four hundred thirteen thousand, five hundred sixty-five".