136163605 has 4 divisors (see below), whose sum is σ = 163396332. Its totient is φ = 108930880.

The previous prime is 136163603. The next prime is 136163639. The reversal of 136163605 is 506361631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506361631 = 97 ⋅5220223.

It can be written as a sum of positive squares in 2 ways, for example, as 99221521 + 36942084 = 9961^2 + 6078^2 .

It is not a de Polignac number, because 136163605 - 2¹ = 136163603 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136163603) 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, 13616356 + ... + 13616365.

It is an arithmetic number, because the mean of its divisors is an integer number (40849083).

Almost surely, 2^136163605 is an apocalyptic number.

It is an amenable number.

136163605 is a deficient number, since it is larger than the sum of its proper divisors (27232727).

136163605 is an equidigital number, since it uses as much as digits as its factorization.

136163605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27232726.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 136163605 is about 11668.9161878899. The cubic root of 136163605 is about 514.4624484992.

The spelling of 136163605 in words is "one hundred thirty-six million, one hundred sixty-three thousand, six hundred five".