136187656 has 48 divisors (see below), whose sum is σ = 283464720. Its totient is φ = 60832800.

The previous prime is 136187651. The next prime is 136187657. The reversal of 136187656 is 656781631.

It is not an unprimeable number, because it can be changed into a prime (136187651) 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, 443455 + ... + 443761.

It is an arithmetic number, because the mean of its divisors is an integer number (5905515).

Almost surely, 2^136187656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136187656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141732360).

136187656 is an abundant number, since it is smaller than the sum of its proper divisors (147277064).

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

136187656 is a wasteful number, since it uses less digits than its factorization.

136187656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 391 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 136187656 is about 11669.9467008209. The cubic root of 136187656 is about 514.4927370821.

The spelling of 136187656 in words is "one hundred thirty-six million, one hundred eighty-seven thousand, six hundred fifty-six".