136581876 has 120 divisors (see below), whose sum is σ = 382918536. Its totient is φ = 42301440.

The previous prime is 136581847. The next prime is 136581883. The reversal of 136581876 is 678185631.

It can be written as a sum of positive squares in 4 ways, for example, as 7986276 + 128595600 = 2826^2 + 11340^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 754506 + ... + 754686.

Almost surely, 2^136581876 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 136581876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191459268).

136581876 is an abundant number, since it is smaller than the sum of its proper divisors (246336660).

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

136581876 is a wasteful number, since it uses less digits than its factorization.

136581876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 340 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 136581876 is about 11686.8248895926. The cubic root of 136581876 is about 514.9886898575.

The spelling of 136581876 in words is "one hundred thirty-six million, five hundred eighty-one thousand, eight hundred seventy-six".