135665737 has 2 divisors, whose sum is σ = 135665738. Its totient is φ = 135665736.

The previous prime is 135665701. The next prime is 135665749. The reversal of 135665737 is 737566531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114404416 + 21261321 = 10696^2 + 4611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135665737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135665693 and 135665702.

It is not a weakly prime, because it can be changed into another prime (135665767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67832868 + 67832869.

It is an arithmetic number, because the mean of its divisors is an integer number (67832869).

Almost surely, 2^135665737 is an apocalyptic number.

It is an amenable number.

135665737 is a deficient number, since it is larger than the sum of its proper divisors (1).

135665737 is an equidigital number, since it uses as much as digits as its factorization.

135665737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 43.

The square root of 135665737 is about 11647.5635649693. The cubic root of 135665737 is about 513.8346566547.

The spelling of 135665737 in words is "one hundred thirty-five million, six hundred sixty-five thousand, seven hundred thirty-seven".