136563645 has 16 divisors (see below), whose sum is σ = 219952512. Its totient is φ = 72350400.

The previous prime is 136563641. The next prime is 136563653. The reversal of 136563645 is 546365631.

It is a happy number.

136563645 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 136563645 - 2² = 136563641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136563641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27882 + ... + 32411.

It is an arithmetic number, because the mean of its divisors is an integer number (13747032).

Almost surely, 2^136563645 is an apocalyptic number.

136563645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136563645 is a deficient number, since it is larger than the sum of its proper divisors (83388867).

136563645 is a wasteful number, since it uses less digits than its factorization.

136563645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60452.

The product of its digits is 194400, while the sum is 39.

The square root of 136563645 is about 11686.0448826795. The cubic root of 136563645 is about 514.9657752101.

The spelling of 136563645 in words is "one hundred thirty-six million, five hundred sixty-three thousand, six hundred forty-five".