136687841 has 8 divisors (see below), whose sum is σ = 141312864. Its totient is φ = 132128640.

The previous prime is 136687829. The next prime is 136687849. The reversal of 136687841 is 148786631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136687841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136687792 and 136687801.

It is not an unprimeable number, because it can be changed into a prime (136687849) 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 7 ways as a sum of consecutive naturals, for example, 12215 + ... + 20556.

It is an arithmetic number, because the mean of its divisors is an integer number (17664108).

Almost surely, 2^136687841 is an apocalyptic number.

It is an amenable number.

136687841 is a deficient number, since it is larger than the sum of its proper divisors (4625023).

136687841 is an equidigital number, since it uses as much as digits as its factorization.

136687841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32911.

The product of its digits is 193536, while the sum is 44.

The square root of 136687841 is about 11691.3575345210. The cubic root of 136687841 is about 515.1218375136.

The spelling of 136687841 in words is "one hundred thirty-six million, six hundred eighty-seven thousand, eight hundred forty-one".