136085566 has 4 divisors (see below), whose sum is σ = 204128352. Its totient is φ = 68042782.

The previous prime is 136085531. The next prime is 136085591. The reversal of 136085566 is 665580631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665580631 = 439 ⋅1516129.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34021390 + ... + 34021393.

It is an arithmetic number, because the mean of its divisors is an integer number (51032088).

Almost surely, 2^136085566 is an apocalyptic number.

136085566 is a deficient number, since it is larger than the sum of its proper divisors (68042786).

136085566 is an equidigital number, since it uses as much as digits as its factorization.

136085566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68042785.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 136085566 is about 11665.5718248185. The cubic root of 136085566 is about 514.3641456587.

The spelling of 136085566 in words is "one hundred thirty-six million, eighty-five thousand, five hundred sixty-six".