135608687 has 2 divisors, whose sum is σ = 135608688. Its totient is φ = 135608686.

The previous prime is 135608653. The next prime is 135608699. The reversal of 135608687 is 786806531.

135608687 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 135608687 - 2⁶ = 135608623 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 (135608647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67804343 + 67804344.

It is an arithmetic number, because the mean of its divisors is an integer number (67804344).

Almost surely, 2^135608687 is an apocalyptic number.

135608687 is a deficient number, since it is larger than the sum of its proper divisors (1).

135608687 is an equidigital number, since it uses as much as digits as its factorization.

135608687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 135608687 is about 11645.1142974210. The cubic root of 135608687 is about 513.7626208363.

The spelling of 135608687 in words is "one hundred thirty-five million, six hundred eight thousand, six hundred eighty-seven".