136660793 has 4 divisors (see below), whose sum is σ = 136833060. Its totient is φ = 136488528.

The previous prime is 136660747. The next prime is 136660817. The reversal of 136660793 is 397066631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108326464 + 28334329 = 10408^2 + 5323^2 .

It is a cyclic number.

It is not a de Polignac number, because 136660793 - 2¹⁰ = 136659769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136660793.

It is not an unprimeable number, because it can be changed into a prime (136660703) 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, 84938 + ... + 86531.

It is an arithmetic number, because the mean of its divisors is an integer number (34208265).

Almost surely, 2^136660793 is an apocalyptic number.

It is an amenable number.

136660793 is a deficient number, since it is larger than the sum of its proper divisors (172267).

136660793 is an equidigital number, since it uses as much as digits as its factorization.

136660793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172266.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 136660793 is about 11690.2007253939. The cubic root of 136660793 is about 515.0878575719.

The spelling of 136660793 in words is "one hundred thirty-six million, six hundred sixty thousand, seven hundred ninety-three".