135675809 has 8 divisors (see below), whose sum is σ = 140424960. Its totient is φ = 130950000.

The previous prime is 135675803. The next prime is 135675811. The reversal of 135675809 is 908576531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135675809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135675809.

It is not an unprimeable number, because it can be changed into a prime (135675803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6434 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (17553120).

Almost surely, 2^135675809 is an apocalyptic number.

It is an amenable number.

135675809 is a deficient number, since it is larger than the sum of its proper divisors (4749151).

135675809 is a wasteful number, since it uses less digits than its factorization.

135675809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 135675809 is about 11647.9959220460. The cubic root of 135675809 is about 513.8473722569.

The spelling of 135675809 in words is "one hundred thirty-five million, six hundred seventy-five thousand, eight hundred nine".