135397866 has 8 divisors (see below), whose sum is σ = 270795744. Its totient is φ = 45132620.

The previous prime is 135397859. The next prime is 135397891. The reversal of 135397866 is 668793531.

It is a happy number.

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

135397866 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11283150 + ... + 11283161.

It is an arithmetic number, because the mean of its divisors is an integer number (33849468).

Almost surely, 2^135397866 is an apocalyptic number.

135397866 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.

135397866 is a wasteful number, since it uses less digits than its factorization.

135397866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22566316.

The product of its digits is 816480, while the sum is 48.

The square root of 135397866 is about 11636.0588688782. The cubic root of 135397866 is about 513.4962462437.

The spelling of 135397866 in words is "one hundred thirty-five million, three hundred ninety-seven thousand, eight hundred sixty-six".