135968647 has 2 divisors, whose sum is σ = 135968648. Its totient is φ = 135968646.

The previous prime is 135968641. The next prime is 135968681. The reversal of 135968647 is 746869531.

135968647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135968647 - 2³ = 135968639 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135968647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135968641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67984323 + 67984324.

It is an arithmetic number, because the mean of its divisors is an integer number (67984324).

Almost surely, 2^135968647 is an apocalyptic number.

135968647 is a deficient number, since it is larger than the sum of its proper divisors (1).

135968647 is an equidigital number, since it uses as much as digits as its factorization.

135968647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 135968647 is about 11660.5594634220. The cubic root of 135968647 is about 514.2167967652.

The spelling of 135968647 in words is "one hundred thirty-five million, nine hundred sixty-eight thousand, six hundred forty-seven".