135707569 has 2 divisors, whose sum is σ = 135707570. Its totient is φ = 135707568.

The previous prime is 135707531. The next prime is 135707599. The reversal of 135707569 is 965707531.

135707569 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 can be written as a sum of positive squares in only one way, i.e., 128482225 + 7225344 = 11335^2 + 2688^2 .

It is a cyclic number.

It is not a de Polignac number, because 135707569 - 2²⁷ = 1489841 is a prime.

It is a super-2 number, since 2×135707569² = 36833088567779522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135707599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67853784 + 67853785.

It is an arithmetic number, because the mean of its divisors is an integer number (67853785).

Almost surely, 2^135707569 is an apocalyptic number.

It is an amenable number.

135707569 is a deficient number, since it is larger than the sum of its proper divisors (1).

135707569 is an equidigital number, since it uses as much as digits as its factorization.

135707569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 135707569 is about 11649.3591669242. The cubic root of 135707569 is about 513.8874641971.

The spelling of 135707569 in words is "one hundred thirty-five million, seven hundred seven thousand, five hundred sixty-nine".