135680803 has 2 divisors, whose sum is σ = 135680804. Its totient is φ = 135680802.

The previous prime is 135680801. The next prime is 135680833. The reversal of 135680803 is 308086531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135680803 - 2¹ = 135680801 is a prime.

Together with 135680801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135680801) 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, 67840401 + 67840402.

It is an arithmetic number, because the mean of its divisors is an integer number (67840402).

Almost surely, 2^135680803 is an apocalyptic number.

135680803 is a deficient number, since it is larger than the sum of its proper divisors (1).

135680803 is an equidigital number, since it uses as much as digits as its factorization.

135680803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 135680803 is about 11648.2102917143. The cubic root of 135680803 is about 513.8536768008.

The spelling of 135680803 in words is "one hundred thirty-five million, six hundred eighty thousand, eight hundred three".