135239660 has 12 divisors (see below), whose sum is σ = 284003328. Its totient is φ = 54095856.

The previous prime is 135239659. The next prime is 135239669. The reversal of 135239660 is 66932531.

It is a self number, because there is not a number n which added to its sum of digits gives 135239660.

It is not an unprimeable number, because it can be changed into a prime (135239669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3380972 + ... + 3381011.

It is an arithmetic number, because the mean of its divisors is an integer number (23666944).

Almost surely, 2^135239660 is an apocalyptic number.

135239660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135239660 is an abundant number, since it is smaller than the sum of its proper divisors (148763668).

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

135239660 is a wasteful number, since it uses less digits than its factorization.

135239660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761992 (or 6761990 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 135239660 is about 11629.2587897940. The cubic root of 135239660 is about 513.2961696076.

The spelling of 135239660 in words is "one hundred thirty-five million, two hundred thirty-nine thousand, six hundred sixty".