136661333 has 2 divisors, whose sum is σ = 136661334. Its totient is φ = 136661332.

The previous prime is 136661321. The next prime is 136661339. The reversal of 136661333 is 333166631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87198244 + 49463089 = 9338^2 + 7033^2 .

It is a cyclic number.

It is not a de Polignac number, because 136661333 - 2¹⁸ = 136399189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_7734182 and since 136661333 and 7734182 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136661333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136661339) 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, 68330666 + 68330667.

It is an arithmetic number, because the mean of its divisors is an integer number (68330667).

Almost surely, 2^136661333 is an apocalyptic number.

It is an amenable number.

136661333 is a deficient number, since it is larger than the sum of its proper divisors (1).

136661333 is an equidigital number, since it uses as much as digits as its factorization.

136661333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 32.

The square root of 136661333 is about 11690.2238216383. The cubic root of 136661333 is about 515.0885360086.

The spelling of 136661333 in words is "one hundred thirty-six million, six hundred sixty-one thousand, three hundred thirty-three".