135726593 has 2 divisors, whose sum is σ = 135726594. Its totient is φ = 135726592.

The previous prime is 135726581. The next prime is 135726601. The reversal of 135726593 is 395627531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135652609 + 73984 = 11647^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 135726593 - 2⁸ = 135726337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135726593.

It is not a weakly prime, because it can be changed into another prime (135720593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67863296 + 67863297.

It is an arithmetic number, because the mean of its divisors is an integer number (67863297).

Almost surely, 2^135726593 is an apocalyptic number.

It is an amenable number.

135726593 is a deficient number, since it is larger than the sum of its proper divisors (1).

135726593 is an equidigital number, since it uses as much as digits as its factorization.

135726593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 41.

The square root of 135726593 is about 11650.1756639117. The cubic root of 135726593 is about 513.9114759709.

The spelling of 135726593 in words is "one hundred thirty-five million, seven hundred twenty-six thousand, five hundred ninety-three".