136871964 has 96 divisors (see below), whose sum is σ = 379330560. Its totient is φ = 42529536.

The previous prime is 136871963. The next prime is 136871971. The reversal of 136871964 is 469178631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136871963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232879 + ... + 233465.

It is an arithmetic number, because the mean of its divisors is an integer number (3951360).

Almost surely, 2^136871964 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 136871964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189665280).

136871964 is an abundant number, since it is smaller than the sum of its proper divisors (242458596).

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

136871964 is a wasteful number, since it uses less digits than its factorization.

136871964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 736 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 136871964 is about 11699.2292053793. The cubic root of 136871964 is about 515.3530290676.

It can be divided in two parts, 13687 and 1964, that added together give a palindrome (15651).

The spelling of 136871964 in words is "one hundred thirty-six million, eight hundred seventy-one thousand, nine hundred sixty-four".