136563379 has 4 divisors (see below), whose sum is σ = 136848960. Its totient is φ = 136277800.

The previous prime is 136563377. The next prime is 136563389. The reversal of 136563379 is 973365631.

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

It is a cyclic number.

It is not a de Polignac number, because 136563379 - 2¹ = 136563377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136563377) 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 3 ways as a sum of consecutive naturals, for example, 142072 + ... + 143029.

It is an arithmetic number, because the mean of its divisors is an integer number (34212240).

Almost surely, 2^136563379 is an apocalyptic number.

136563379 is a deficient number, since it is larger than the sum of its proper divisors (285581).

136563379 is an equidigital number, since it uses as much as digits as its factorization.

136563379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285580.

The product of its digits is 306180, while the sum is 43.

The square root of 136563379 is about 11686.0335015779. The cubic root of 136563379 is about 514.9654408581.

The spelling of 136563379 in words is "one hundred thirty-six million, five hundred sixty-three thousand, three hundred seventy-nine".