136665434 has 8 divisors (see below), whose sum is σ = 207111828. Its totient is φ = 67628160.

The previous prime is 136665433. The next prime is 136665491. The reversal of 136665434 is 434566631.

136665434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 123321025 + 13344409 = 11105^2 + 3653^2 .

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

It is not an unprimeable number, because it can be changed into a prime (136665433) 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, 352037 + ... + 352424.

Almost surely, 2^136665434 is an apocalyptic number.

136665434 is a deficient number, since it is larger than the sum of its proper divisors (70446394).

136665434 is an equidigital number, since it uses as much as digits as its factorization.

136665434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704560.

The product of its digits is 155520, while the sum is 38.

The square root of 136665434 is about 11690.3992232943. The cubic root of 136665434 is about 515.0936882998.

The spelling of 136665434 in words is "one hundred thirty-six million, six hundred sixty-five thousand, four hundred thirty-four".