136409605 has 8 divisors (see below), whose sum is σ = 163762200. Its totient is φ = 109080576.

The previous prime is 136409563. The next prime is 136409627. The reversal of 136409605 is 506904631.

It can be written as a sum of positive squares in 4 ways, for example, as 17032129 + 119377476 = 4127^2 + 10926^2 .

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 136409605 - 2⁷ = 136409477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11541 + ... + 20149.

It is an arithmetic number, because the mean of its divisors is an integer number (20470275).

Almost surely, 2^136409605 is an apocalyptic number.

It is an amenable number.

136409605 is a deficient number, since it is larger than the sum of its proper divisors (27352595).

136409605 is an equidigital number, since it uses as much as digits as its factorization.

136409605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 136409605 is about 11679.4522559921. The cubic root of 136409605 is about 514.7720799986.

The spelling of 136409605 in words is "one hundred thirty-six million, four hundred nine thousand, six hundred five".