135663556 has 18 divisors (see below), whose sum is σ = 276172638. Its totient is φ = 58141440.

The previous prime is 135663529. The next prime is 135663569. The reversal of 135663556 is 655366531.

It can be written as a sum of positive squares in only one way, i.e., 135349956 + 313600 = 11634^2 + 560^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345885 + ... + 346276.

Almost surely, 2^135663556 is an apocalyptic number.

It is an amenable number.

135663556 is an abundant number, since it is smaller than the sum of its proper divisors (140509082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135663556 is a wasteful number, since it uses less digits than its factorization.

135663556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692179 (or 692170 counting only the distinct ones).

The product of its digits is 243000, while the sum is 40.

The square root of 135663556 is about 11647.4699398625. The cubic root of 135663556 is about 513.8319031239.

The spelling of 135663556 in words is "one hundred thirty-five million, six hundred sixty-three thousand, five hundred fifty-six".