135613637 has 2 divisors, whose sum is σ = 135613638. Its totient is φ = 135613636.

The previous prime is 135613631. The next prime is 135613693. The reversal of 135613637 is 736316531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 18671041 = 10814^2 + 4321^2 .

It is a cyclic number.

It is not a de Polignac number, because 135613637 - 2⁸ = 135613381 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135613597 and 135613606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135613631) 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, 67806818 + 67806819.

It is an arithmetic number, because the mean of its divisors is an integer number (67806819).

Almost surely, 2^135613637 is an apocalyptic number.

It is an amenable number.

135613637 is a deficient number, since it is larger than the sum of its proper divisors (1).

135613637 is an equidigital number, since it uses as much as digits as its factorization.

135613637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 35.

The square root of 135613637 is about 11645.3268309653. The cubic root of 135613637 is about 513.7688718961.

The spelling of 135613637 in words is "one hundred thirty-five million, six hundred thirteen thousand, six hundred thirty-seven".