135665658 has 32 divisors (see below), whose sum is σ = 305121600. Its totient is φ = 44675568.

The previous prime is 135665617. The next prime is 135665669. The reversal of 135665658 is 856566531.

135665658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10653 + ... + 19616.

It is an arithmetic number, because the mean of its divisors is an integer number (9535050).

Almost surely, 2^135665658 is an apocalyptic number.

135665658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135665658 is an abundant number, since it is smaller than the sum of its proper divisors (169455942).

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

135665658 is a wasteful number, since it uses less digits than its factorization.

135665658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30363 (or 30357 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 135665658 is about 11647.5601737016. The cubic root of 135665658 is about 513.8345569171.

The spelling of 135665658 in words is "one hundred thirty-five million, six hundred sixty-five thousand, six hundred fifty-eight".