135687783 has 32 divisors (see below), whose sum is σ = 226616832. Its totient is φ = 70156800.

The previous prime is 135687763. The next prime is 135687809. The reversal of 135687783 is 387786531.

135687783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135687783 - 2⁶ = 135687719 is a prime.

It is a super-2 number, since 2×135687783² = 36822348910910178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135687733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52563 + ... + 55083.

It is an arithmetic number, because the mean of its divisors is an integer number (7081776).

Almost surely, 2^135687783 is an apocalyptic number.

135687783 is a deficient number, since it is larger than the sum of its proper divisors (90929049).

135687783 is a wasteful number, since it uses less digits than its factorization.

135687783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775.

The product of its digits is 846720, while the sum is 48.

The square root of 135687783 is about 11648.5099047045. The cubic root of 135687783 is about 513.8624882589.

The spelling of 135687783 in words is "one hundred thirty-five million, six hundred eighty-seven thousand, seven hundred eighty-three".