136613780 has 24 divisors (see below), whose sum is σ = 296782920. Its totient is φ = 52760960.

The previous prime is 136613759. The next prime is 136613783. The reversal of 136613780 is 87316631.

136613780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28536964 + 108076816 = 5342^2 + 10396^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136613780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136613783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117191 + ... + 118350.

It is an arithmetic number, because the mean of its divisors is an integer number (12365955).

Almost surely, 2^136613780 is an apocalyptic number.

136613780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136613780 is an abundant number, since it is smaller than the sum of its proper divisors (160169140).

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

136613780 is a wasteful number, since it uses less digits than its factorization.

136613780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235579 (or 235577 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 136613780 is about 11688.1897657422. The cubic root of 136613780 is about 515.0287852701.

The spelling of 136613780 in words is "one hundred thirty-six million, six hundred thirteen thousand, seven hundred eighty".