136634423 has 4 divisors (see below), whose sum is σ = 144671760. Its totient is φ = 128597088.

The previous prime is 136634413. The next prime is 136634447. The reversal of 136634423 is 324436631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136634423 - 2¹⁴ = 136618039 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 136634423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136634413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4018643 + ... + 4018676.

It is an arithmetic number, because the mean of its divisors is an integer number (36167940).

Almost surely, 2^136634423 is an apocalyptic number.

136634423 is a deficient number, since it is larger than the sum of its proper divisors (8037337).

136634423 is an equidigital number, since it uses as much as digits as its factorization.

136634423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8037336.

The product of its digits is 31104, while the sum is 32.

The square root of 136634423 is about 11689.0728032637. The cubic root of 136634423 is about 515.0547250735.

The spelling of 136634423 in words is "one hundred thirty-six million, six hundred thirty-four thousand, four hundred twenty-three".