136613207 has 4 divisors (see below), whose sum is σ = 144649296. Its totient is φ = 128577120.

The previous prime is 136613179. The next prime is 136613227. The reversal of 136613207 is 702316631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702316631 = 17 ⋅41312743.

It is not a de Polignac number, because 136613207 - 2⁸ = 136612951 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 136613207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136613227) 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, 4018019 + ... + 4018052.

It is an arithmetic number, because the mean of its divisors is an integer number (36162324).

Almost surely, 2^136613207 is an apocalyptic number.

136613207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

136613207 is a deficient number, since it is larger than the sum of its proper divisors (8036089).

136613207 is an equidigital number, since it uses as much as digits as its factorization.

136613207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036088.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 136613207 is about 11688.1652537941. The cubic root of 136613207 is about 515.0280652063.

Adding to 136613207 its reverse (702316631), we get a palindrome (838929838).

The spelling of 136613207 in words is "one hundred thirty-six million, six hundred thirteen thousand, two hundred seven".