135605663 has 2 divisors, whose sum is σ = 135605664. Its totient is φ = 135605662.

The previous prime is 135605611. The next prime is 135605689. The reversal of 135605663 is 366506531.

135605663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135605663 - 2⁶ = 135605599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135605863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67802831 + 67802832.

It is an arithmetic number, because the mean of its divisors is an integer number (67802832).

Almost surely, 2^135605663 is an apocalyptic number.

135605663 is a deficient number, since it is larger than the sum of its proper divisors (1).

135605663 is an equidigital number, since it uses as much as digits as its factorization.

135605663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 135605663 is about 11644.9844568381. The cubic root of 135605663 is about 513.7588019322.

The spelling of 135605663 in words is "one hundred thirty-five million, six hundred five thousand, six hundred sixty-three".