136664453 has 2 divisors, whose sum is σ = 136664454. Its totient is φ = 136664452.

The previous prime is 136664447. The next prime is 136664491. The reversal of 136664453 is 354466631.

It is an a-pointer prime, because the next prime (136664491) can be obtained adding 136664453 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128097124 + 8567329 = 11318^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 136664453 - 2⁸ = 136664197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136664953) 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, 68332226 + 68332227.

It is an arithmetic number, because the mean of its divisors is an integer number (68332227).

Almost surely, 2^136664453 is an apocalyptic number.

It is an amenable number.

136664453 is a deficient number, since it is larger than the sum of its proper divisors (1).

136664453 is an equidigital number, since it uses as much as digits as its factorization.

136664453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 38.

The square root of 136664453 is about 11690.3572657126. The cubic root of 136664453 is about 515.0924558299.

The spelling of 136664453 in words is "one hundred thirty-six million, six hundred sixty-four thousand, four hundred fifty-three".