135727587 has 18 divisors (see below), whose sum is σ = 200340348. Its totient is φ = 88546872.

The previous prime is 135727549. The next prime is 135727591. The reversal of 135727587 is 785727531.

135727587 is a `hidden beast` number, since 1 + 3 + 572 + 75 + 8 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-135727587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135727597) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16468 + ... + 23294.

Almost surely, 2^135727587 is an apocalyptic number.

135727587 is a deficient number, since it is larger than the sum of its proper divisors (64612761).

135727587 is an equidigital number, since it uses as much as digits as its factorization.

135727587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6927 (or 6877 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The square root of 135727587 is about 11650.2183241345. The cubic root of 135727587 is about 513.9127305193.

The spelling of 135727587 in words is "one hundred thirty-five million, seven hundred twenty-seven thousand, five hundred eighty-seven".