135608647 has 2 divisors, whose sum is σ = 135608648. Its totient is φ = 135608646.

The previous prime is 135608623. The next prime is 135608653. The reversal of 135608647 is 746806531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135608647 - 2⁷ = 135608519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135608687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67804323 + 67804324.

It is an arithmetic number, because the mean of its divisors is an integer number (67804324).

Almost surely, 2^135608647 is an apocalyptic number.

135608647 is a deficient number, since it is larger than the sum of its proper divisors (1).

135608647 is an equidigital number, since it uses as much as digits as its factorization.

135608647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 135608647 is about 11645.1125799625. The cubic root of 135608647 is about 513.7625703221.

The spelling of 135608647 in words is "one hundred thirty-five million, six hundred eight thousand, six hundred forty-seven".