135760649 has 2 divisors, whose sum is σ = 135760650. Its totient is φ = 135760648.

The previous prime is 135760621. The next prime is 135760661. The reversal of 135760649 is 946067531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129846025 + 5914624 = 11395^2 + 2432^2 .

It is an emirp because it is prime and its reverse (946067531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135760649 - 2¹² = 135756553 is a prime.

It is not a weakly prime, because it can be changed into another prime (135760349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67880324 + 67880325.

It is an arithmetic number, because the mean of its divisors is an integer number (67880325).

Almost surely, 2^135760649 is an apocalyptic number.

It is an amenable number.

135760649 is a deficient number, since it is larger than the sum of its proper divisors (1).

135760649 is an equidigital number, since it uses as much as digits as its factorization.

135760649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 135760649 is about 11651.6371811003. The cubic root of 135760649 is about 513.9544552800.

The spelling of 135760649 in words is "one hundred thirty-five million, seven hundred sixty thousand, six hundred forty-nine".