136563817 has 8 divisors (see below), whose sum is σ = 148526280. Its totient is φ = 124809600.

The previous prime is 136563797. The next prime is 136563821. The reversal of 136563817 is 718365631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6170256 + 130393561 = 2484^2 + 11419^2 .

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 136563817 - 2¹⁹ = 136039529 is a prime.

It is a super-2 number, since 2×136563817² = 37299352227218978, which contains 22 as substring.

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 136563817.

It is not an unprimeable number, because it can be changed into a prime (136563877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50692 + ... + 53317.

It is an arithmetic number, because the mean of its divisors is an integer number (18565785).

Almost surely, 2^136563817 is an apocalyptic number.

It is an amenable number.

136563817 is a deficient number, since it is larger than the sum of its proper divisors (11962463).

136563817 is a wasteful number, since it uses less digits than its factorization.

136563817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104123.

The product of its digits is 90720, while the sum is 40.

The square root of 136563817 is about 11686.0522418822. The cubic root of 136563817 is about 514.9659914074.

The spelling of 136563817 in words is "one hundred thirty-six million, five hundred sixty-three thousand, eight hundred seventeen".