135865668 has 24 divisors (see below), whose sum is σ = 317604672. Its totient is φ = 45205024.

The previous prime is 135865657. The next prime is 135865679. The reversal of 135865668 is 866568531.

135865668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135865657) and next prime (135865679).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480 + ... + 16847.

It is an arithmetic number, because the mean of its divisors is an integer number (13233528).

Almost surely, 2^135865668 is an apocalyptic number.

It is an amenable number.

135865668 is an abundant number, since it is smaller than the sum of its proper divisors (181739004).

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

135865668 is a wasteful number, since it uses less digits than its factorization.

135865668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20891 (or 20889 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 135865668 is about 11656.1429298032. The cubic root of 135865668 is about 514.0869459826.

The spelling of 135865668 in words is "one hundred thirty-five million, eight hundred sixty-five thousand, six hundred sixty-eight".