136724823 has 12 divisors (see below), whose sum is σ = 200439928. Its totient is φ = 89789040.

The previous prime is 136724813. The next prime is 136724869. The reversal of 136724823 is 328427631.

It is a happy number.

It is not a de Polignac number, because 136724823 - 2⁶ = 136724759 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 (136724813) 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 11 ways as a sum of consecutive naturals, for example, 112768 + ... + 113973.

Almost surely, 2^136724823 is an apocalyptic number.

136724823 is a deficient number, since it is larger than the sum of its proper divisors (63715105).

136724823 is a wasteful number, since it uses less digits than its factorization.

136724823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226814 (or 226811 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 136724823 is about 11692.9390231883. The cubic root of 136724823 is about 515.1682901165.

The spelling of 136724823 in words is "one hundred thirty-six million, seven hundred twenty-four thousand, eight hundred twenty-three".