135776660 has 48 divisors (see below), whose sum is σ = 303139200. Its totient is φ = 50937984.

The previous prime is 135776651. The next prime is 135776681. The reversal of 135776660 is 66677531.

It is a congruent number.

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, 37406 + ... + 40874.

It is an arithmetic number, because the mean of its divisors is an integer number (6315400).

Almost surely, 2^135776660 is an apocalyptic number.

135776660 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 135776660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151569600).

135776660 is an abundant number, since it is smaller than the sum of its proper divisors (167362540).

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

135776660 is a wasteful number, since it uses less digits than its factorization.

135776660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 135776660 is about 11652.3242316716. The cubic root of 135776660 is about 513.9746589777.

The spelling of 135776660 in words is "one hundred thirty-five million, seven hundred seventy-six thousand, six hundred sixty".