136739680 has 144 divisors (see below), whose sum is σ = 406213920. Its totient is φ = 42577920.

The previous prime is 136739671. The next prime is 136739683. The reversal of 136739680 is 86937631.

136739680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136739683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135016 + ... + 136024.

It is an arithmetic number, because the mean of its divisors is an integer number (2820930).

Almost surely, 2^136739680 is an apocalyptic number.

136739680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136739680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203106960).

136739680 is an abundant number, since it is smaller than the sum of its proper divisors (269474240).

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

136739680 is a wasteful number, since it uses less digits than its factorization.

136739680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 136739680 is about 11693.5743038645. The cubic root of 136739680 is about 515.1869494399.

The spelling of 136739680 in words is "one hundred thirty-six million, seven hundred thirty-nine thousand, six hundred eighty".