136868233 has 4 divisors (see below), whose sum is σ = 137633040. Its totient is φ = 136103428.

The previous prime is 136868227. The next prime is 136868273. The reversal of 136868233 is 332868631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136868233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136868273) 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, 382135 + ... + 382492.

It is an arithmetic number, because the mean of its divisors is an integer number (34408260).

Almost surely, 2^136868233 is an apocalyptic number.

It is an amenable number.

136868233 is a deficient number, since it is larger than the sum of its proper divisors (764807).

136868233 is an equidigital number, since it uses as much as digits as its factorization.

136868233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764806.

The product of its digits is 124416, while the sum is 40.

The square root of 136868233 is about 11699.0697493433. The cubic root of 136868233 is about 515.3483463467.

The spelling of 136868233 in words is "one hundred thirty-six million, eight hundred sixty-eight thousand, two hundred thirty-three".