135808603 has 4 divisors (see below), whose sum is σ = 155209840. Its totient is φ = 116407368.

The previous prime is 135808591. The next prime is 135808609. The reversal of 135808603 is 306808531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135808603 - 2¹³ = 135800411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135808609) 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 in 3 ways as a sum of consecutive naturals, for example, 9700608 + ... + 9700621.

It is an arithmetic number, because the mean of its divisors is an integer number (38802460).

Almost surely, 2^135808603 is an apocalyptic number.

135808603 is a deficient number, since it is larger than the sum of its proper divisors (19401237).

135808603 is an equidigital number, since it uses as much as digits as its factorization.

135808603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19401236.

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

The square root of 135808603 is about 11653.6948218151. The cubic root of 135808603 is about 514.0149619409.

The spelling of 135808603 in words is "one hundred thirty-five million, eight hundred eight thousand, six hundred three".