136665577 has 8 divisors (see below), whose sum is σ = 141702912. Its totient is φ = 131667600.

The previous prime is 136665569. The next prime is 136665593. The reversal of 136665577 is 775566631.

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 136665577 - 2³ = 136665569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136665527) 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, 2674 + ... + 16747.

It is an arithmetic number, because the mean of its divisors is an integer number (17712864).

Almost surely, 2^136665577 is an apocalyptic number.

It is an amenable number.

136665577 is a deficient number, since it is larger than the sum of its proper divisors (5037335).

136665577 is a wasteful number, since it uses less digits than its factorization.

136665577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19679.

The product of its digits is 793800, while the sum is 46.

The square root of 136665577 is about 11690.4053394226. The cubic root of 136665577 is about 515.0938679560.

The spelling of 136665577 in words is "one hundred thirty-six million, six hundred sixty-five thousand, five hundred seventy-seven".