136447 has 2 divisors, whose sum is σ = 136448. Its totient is φ = 136446.

The previous prime is 136429. The next prime is 136453. The reversal of 136447 is 744631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136447 - 2⁷ = 136319 is a prime.

136447 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136417) 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 as a sum of consecutive naturals, namely, 68223 + 68224.

It is an arithmetic number, because the mean of its divisors is an integer number (68224).

2¹³⁶⁴⁴⁷ is an apocalyptic number.

136447 is a deficient number, since it is larger than the sum of its proper divisors (1).

136447 is an equidigital number, since it uses as much as digits as its factorization.

136447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 136447 is about 369.3873305895. The cubic root of 136447 is about 51.4819115160.

Subtracting from 136447 its product of digits (2016), we obtain a palindrome (134431).

The spelling of 136447 in words is "one hundred thirty-six thousand, four hundred forty-seven".