135555660 has 96 divisors (see below), whose sum is σ = 423487680. Its totient is φ = 35997696.

The previous prime is 135555647. The next prime is 135555677. The reversal of 135555660 is 66555531.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201084 + ... + 201756.

It is an arithmetic number, because the mean of its divisors is an integer number (4411330).

Almost surely, 2^135555660 is an apocalyptic number.

135555660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135555660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211743840).

135555660 is an abundant number, since it is smaller than the sum of its proper divisors (287932020).

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

135555660 is a wasteful number, since it uses less digits than its factorization.

135555660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 135555660 is about 11642.8372830681. The cubic root of 135555660 is about 513.6956466553.

The spelling of 135555660 in words is "one hundred thirty-five million, five hundred fifty-five thousand, six hundred sixty".