136687823 has 8 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 135487000.

The previous prime is 136687799. The next prime is 136687829. The reversal of 136687823 is 328786631.

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

It is a cyclic number.

It is not a de Polignac number, because 136687823 - 2¹⁴ = 136671439 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 (136687829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55778 + ... + 58176.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^136687823 is an apocalyptic number.

136687823 is a deficient number, since it is larger than the sum of its proper divisors (1206577).

136687823 is a wasteful number, since it uses less digits than its factorization.

136687823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877.

The product of its digits is 290304, while the sum is 44.

The square root of 136687823 is about 11691.3567647215. The cubic root of 136687823 is about 515.1218149020.

The spelling of 136687823 in words is "one hundred thirty-six million, six hundred eighty-seven thousand, eight hundred twenty-three".