135787760 has 20 divisors (see below), whose sum is σ = 315706728. Its totient is φ = 54315072.

The previous prime is 135787759. The next prime is 135787763. The reversal of 135787760 is 67787531.

135787760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135787763) 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, 848594 + ... + 848753.

Almost surely, 2^135787760 is an apocalyptic number.

135787760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135787760 is an abundant number, since it is smaller than the sum of its proper divisors (179918968).

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

135787760 is a wasteful number, since it uses less digits than its factorization.

135787760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697360 (or 1697354 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 135787760 is about 11652.8005217630. The cubic root of 135787760 is about 513.9886647311.

The spelling of 135787760 in words is "one hundred thirty-five million, seven hundred eighty-seven thousand, seven hundred sixty".