136582729 has 2 divisors, whose sum is σ = 136582730. Its totient is φ = 136582728.

The previous prime is 136582727. The next prime is 136582739. The reversal of 136582729 is 927285631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136352329 + 230400 = 11677^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 136582729 - 2¹ = 136582727 is a prime.

It is a super-2 number, since 2×136582729² = 37309683722174882, which contains 22 as substring.

Together with 136582727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (136582723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68291364 + 68291365.

It is an arithmetic number, because the mean of its divisors is an integer number (68291365).

Almost surely, 2^136582729 is an apocalyptic number.

It is an amenable number.

136582729 is a deficient number, since it is larger than the sum of its proper divisors (1).

136582729 is an equidigital number, since it uses as much as digits as its factorization.

136582729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 136582729 is about 11686.8613836222. The cubic root of 136582729 is about 514.9897619481.

The spelling of 136582729 in words is "one hundred thirty-six million, five hundred eighty-two thousand, seven hundred twenty-nine".