135698957 has 2 divisors, whose sum is σ = 135698958. Its totient is φ = 135698956.

The previous prime is 135698903. The next prime is 135698977. The reversal of 135698957 is 759896531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127667401 + 8031556 = 11299^2 + 2834^2 .

It is a cyclic number.

It is not a de Polignac number, because 135698957 - 2⁸ = 135698701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135698899 and 135698908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135698977) 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, 67849478 + 67849479.

It is an arithmetic number, because the mean of its divisors is an integer number (67849479).

Almost surely, 2^135698957 is an apocalyptic number.

It is an amenable number.

135698957 is a deficient number, since it is larger than the sum of its proper divisors (1).

135698957 is an equidigital number, since it uses as much as digits as its factorization.

135698957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 53.

The square root of 135698957 is about 11648.9895269933. The cubic root of 135698957 is about 513.8765935373.

The spelling of 135698957 in words is "one hundred thirty-five million, six hundred ninety-eight thousand, nine hundred fifty-seven".