136645256 has 32 divisors (see below), whose sum is σ = 280130400. Its totient is φ = 61971840.

The previous prime is 136645253. The next prime is 136645279. The reversal of 136645256 is 652546631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (136645253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44540 + ... + 47508.

It is an arithmetic number, because the mean of its divisors is an integer number (8754075).

Almost surely, 2^136645256 is an apocalyptic number.

It is an amenable number.

136645256 is an abundant number, since it is smaller than the sum of its proper divisors (143485144).

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

136645256 is a wasteful number, since it uses less digits than its factorization.

136645256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509 (or 3505 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 136645256 is about 11689.5361755717. The cubic root of 136645256 is about 515.0683366760.

The spelling of 136645256 in words is "one hundred thirty-six million, six hundred forty-five thousand, two hundred fifty-six".