135647577 has 12 divisors (see below), whose sum is σ = 211007524. Its totient is φ = 83475360.

The previous prime is 135647543. The next prime is 135647579. The reversal of 135647577 is 775746531.

135647577 is a `hidden beast` number, since 1 + 35 + 6 + 47 + 577 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27154521 + 108493056 = 5211^2 + 10416^2 .

It is not a de Polignac number, because 135647577 - 2⁸ = 135647321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135647579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579574 + ... + 579807.

Almost surely, 2^135647577 is an apocalyptic number.

It is an amenable number.

135647577 is a deficient number, since it is larger than the sum of its proper divisors (75359947).

135647577 is a wasteful number, since it uses less digits than its factorization.

135647577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159400 (or 1159397 counting only the distinct ones).

The product of its digits is 617400, while the sum is 45.

The square root of 135647577 is about 11646.7839767036. The cubic root of 135647577 is about 513.8117286014.

The spelling of 135647577 in words is "one hundred thirty-five million, six hundred forty-seven thousand, five hundred seventy-seven".