136688411 has 4 divisors (see below), whose sum is σ = 136714800. Its totient is φ = 136662024.

The previous prime is 136688401. The next prime is 136688429. The reversal of 136688411 is 114886631.

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 136688411 - 2¹⁸ = 136426267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136688401) 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 3 ways as a sum of consecutive naturals, for example, 2576 + ... + 16733.

It is an arithmetic number, because the mean of its divisors is an integer number (34178700).

Almost surely, 2^136688411 is an apocalyptic number.

136688411 is a deficient number, since it is larger than the sum of its proper divisors (26389).

136688411 is an equidigital number, since it uses as much as digits as its factorization.

136688411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26388.

The product of its digits is 27648, while the sum is 38.

The square root of 136688411 is about 11691.3819114765. The cubic root of 136688411 is about 515.1225535466.

The spelling of 136688411 in words is "one hundred thirty-six million, six hundred eighty-eight thousand, four hundred eleven".