135211660 has 24 divisors (see below), whose sum is σ = 287542080. Its totient is φ = 53399424.

The previous prime is 135211649. The next prime is 135211669. The reversal of 135211660 is 66112531.

It is not an unprimeable number, because it can be changed into a prime (135211669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41209 + ... + 44368.

It is an arithmetic number, because the mean of its divisors is an integer number (11980920).

Almost surely, 2^135211660 is an apocalyptic number.

135211660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135211660 is an abundant number, since it is smaller than the sum of its proper divisors (152330420).

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

135211660 is a wasteful number, since it uses less digits than its factorization.

135211660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85665 (or 85663 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 135211660 is about 11628.0548674316. The cubic root of 135211660 is about 513.2607429073.

The spelling of 135211660 in words is "one hundred thirty-five million, two hundred eleven thousand, six hundred sixty".