136345663 has 4 divisors (see below), whose sum is σ = 136538680. Its totient is φ = 136152648.

The previous prime is 136345639. The next prime is 136345673. The reversal of 136345663 is 366543631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366543631 = 6569 ⋅55799.

It is a cyclic number.

It is not a de Polignac number, because 136345663 - 2¹³ = 136337471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136345613) 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, 95445 + ... + 96862.

It is an arithmetic number, because the mean of its divisors is an integer number (34134670).

Almost surely, 2^136345663 is an apocalyptic number.

136345663 is a deficient number, since it is larger than the sum of its proper divisors (193017).

136345663 is an equidigital number, since it uses as much as digits as its factorization.

136345663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193016.

The product of its digits is 116640, while the sum is 37.

The square root of 136345663 is about 11676.7145636091. The cubic root of 136345663 is about 514.6916342931.

The spelling of 136345663 in words is "one hundred thirty-six million, three hundred forty-five thousand, six hundred sixty-three".