136805223 has 8 divisors (see below), whose sum is σ = 185129728. Its totient is φ = 89842104.

The previous prime is 136805197. The next prime is 136805237. The reversal of 136805223 is 322508631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136805223 - 2⁶ = 136805159 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 (136805023) 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, 340111 + ... + 340512.

It is an arithmetic number, because the mean of its divisors is an integer number (23141216).

Almost surely, 2^136805223 is an apocalyptic number.

136805223 is a deficient number, since it is larger than the sum of its proper divisors (48324505).

136805223 is an equidigital number, since it uses as much as digits as its factorization.

136805223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680693.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 136805223 is about 11696.3764901785. The cubic root of 136805223 is about 515.2692506040.

The spelling of 136805223 in words is "one hundred thirty-six million, eight hundred five thousand, two hundred twenty-three".