135705787 has 8 divisors (see below), whose sum is σ = 155242976. Its totient is φ = 116206272.

The previous prime is 135705767. The next prime is 135705797. The reversal of 135705787 is 787507531.

135705787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135705787 - 2¹¹ = 135703739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135705767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218 + ... + 16519.

It is an arithmetic number, because the mean of its divisors is an integer number (19405372).

Almost surely, 2^135705787 is an apocalyptic number.

135705787 is a deficient number, since it is larger than the sum of its proper divisors (19537189).

135705787 is a wasteful number, since it uses less digits than its factorization.

135705787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18837.

The product of its (nonzero) digits is 205800, while the sum is 43.

The square root of 135705787 is about 11649.2826817792. The cubic root of 135705787 is about 513.8852148717.

The spelling of 135705787 in words is "one hundred thirty-five million, seven hundred five thousand, seven hundred eighty-seven".