135499566 has 8 divisors (see below), whose sum is σ = 270999144. Its totient is φ = 45166520.

The previous prime is 135499561. The next prime is 135499597. The reversal of 135499566 is 665994531.

It is a happy number.

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

135499566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135499561) 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 3 ways as a sum of consecutive naturals, for example, 11291625 + ... + 11291636.

It is an arithmetic number, because the mean of its divisors is an integer number (33874893).

Almost surely, 2^135499566 is an apocalyptic number.

135499566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135499566 is a wasteful number, since it uses less digits than its factorization.

135499566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22583266.

The product of its digits is 874800, while the sum is 48.

The square root of 135499566 is about 11640.4280849117. The cubic root of 135499566 is about 513.6247797775.

The spelling of 135499566 in words is "one hundred thirty-five million, four hundred ninety-nine thousand, five hundred sixty-six".