135366689 has 2 divisors, whose sum is σ = 135366690. Its totient is φ = 135366688.

The previous prime is 135366653. The next prime is 135366691. The reversal of 135366689 is 986663531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135326689 + 40000 = 11633^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 135366689 - 2²⁰ = 134318113 is a prime.

Together with 135366691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135366629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67683344 + 67683345.

It is an arithmetic number, because the mean of its divisors is an integer number (67683345).

Almost surely, 2^135366689 is an apocalyptic number.

It is an amenable number.

135366689 is a deficient number, since it is larger than the sum of its proper divisors (1).

135366689 is an equidigital number, since it uses as much as digits as its factorization.

135366689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 47.

The square root of 135366689 is about 11634.7191199444. The cubic root of 135366689 is about 513.4568303064.

The spelling of 135366689 in words is "one hundred thirty-five million, three hundred sixty-six thousand, six hundred eighty-nine".