136523605 has 8 divisors (see below), whose sum is σ = 164421432. Its totient is φ = 108823488.

The previous prime is 136523593. The next prime is 136523609. The reversal of 136523605 is 506325631.

It can be written as a sum of positive squares in 4 ways, for example, as 311364 + 136212241 = 558^2 + 11671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136523605 - 2⁵ = 136523573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136523609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47902 + ... + 50671.

It is an arithmetic number, because the mean of its divisors is an integer number (20552679).

Almost surely, 2^136523605 is an apocalyptic number.

It is an amenable number.

136523605 is a deficient number, since it is larger than the sum of its proper divisors (27897827).

136523605 is an equidigital number, since it uses as much as digits as its factorization.

136523605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98855.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 136523605 is about 11684.3316026207. The cubic root of 136523605 is about 514.9154415479.

The spelling of 136523605 in words is "one hundred thirty-six million, five hundred twenty-three thousand, six hundred five".