135645771 has 16 divisors (see below), whose sum is σ = 192374784. Its totient is φ = 84722304.

The previous prime is 135645767. The next prime is 135645773. The reversal of 135645771 is 177546531.

It is not a de Polignac number, because 135645771 - 2² = 135645767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135645773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5410 + ... + 17336.

It is an arithmetic number, because the mean of its divisors is an integer number (12023424).

Almost surely, 2^135645771 is an apocalyptic number.

135645771 is a deficient number, since it is larger than the sum of its proper divisors (56729013).

135645771 is a wasteful number, since it uses less digits than its factorization.

135645771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12170.

The product of its digits is 88200, while the sum is 39.

The square root of 135645771 is about 11646.7064443129. The cubic root of 135645771 is about 513.8094483098.

The spelling of 135645771 in words is "one hundred thirty-five million, six hundred forty-five thousand, seven hundred seventy-one".