136247 has 2 divisors, whose sum is σ = 136248. Its totient is φ = 136246.

The previous prime is 136237. The next prime is 136261. The reversal of 136247 is 742631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136247 - 2¹² = 132151 is a prime.

It is a d-powerful number, because it can be written as 1 + 3⁶ + 2¹⁷ + 6 + 4⁶ + 7³ .

It is equal to p₁₂₆₈₆ and since 136247 and 12686 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68123 + 68124.

It is an arithmetic number, because the mean of its divisors is an integer number (68124).

2¹³⁶²⁴⁷ is an apocalyptic number.

136247 is a deficient number, since it is larger than the sum of its proper divisors (1).

136247 is an equidigital number, since it uses as much as digits as its factorization.

136247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 136247 is about 369.1165127707. The cubic root of 136247 is about 51.4567456588.

Adding to 136247 its reverse (742631), we get a palindrome (878878).

It can be divided in two parts, 13624 and 7, that added together give a palindrome (13631).

The spelling of 136247 in words is "one hundred thirty-six thousand, two hundred forty-seven".