135809767 has 2 divisors, whose sum is σ = 135809768. Its totient is φ = 135809766.

The previous prime is 135809759. The next prime is 135809771. The reversal of 135809767 is 767908531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135809767 - 2³ = 135809759 is a prime.

It is equal to p_7688593 and since 135809767 and 7688593 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135809747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67904883 + 67904884.

It is an arithmetic number, because the mean of its divisors is an integer number (67904884).

Almost surely, 2^135809767 is an apocalyptic number.

135809767 is a deficient number, since it is larger than the sum of its proper divisors (1).

135809767 is an equidigital number, since it uses as much as digits as its factorization.

135809767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 135809767 is about 11653.7447629507. The cubic root of 135809767 is about 514.0164304578.

The spelling of 135809767 in words is "one hundred thirty-five million, eight hundred nine thousand, seven hundred sixty-seven".