135639556 has 96 divisors (see below), whose sum is σ = 289013760. Its totient is φ = 55085184.

The previous prime is 135639551. The next prime is 135639563. The reversal of 135639556 is 655936531.

It is not an unprimeable number, because it can be changed into a prime (135639551) 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, 1067965 + ... + 1068091.

It is an arithmetic number, because the mean of its divisors is an integer number (3010560).

Almost surely, 2^135639556 is an apocalyptic number.

It is an amenable number.

135639556 is an abundant number, since it is smaller than the sum of its proper divisors (153374204).

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

135639556 is a wasteful number, since it uses less digits than its factorization.

135639556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 231 counting only the distinct ones).

The product of its digits is 364500, while the sum is 43.

The square root of 135639556 is about 11646.4396276287. The cubic root of 135639556 is about 513.8016009722.

The spelling of 135639556 in words is "one hundred thirty-five million, six hundred thirty-nine thousand, five hundred fifty-six".