136820061 has 24 divisors (see below), whose sum is σ = 227872320. Its totient is φ = 77486976.

The previous prime is 136820051. The next prime is 136820093. The reversal of 136820061 is 160028631.

It is not a de Polignac number, because 136820061 - 2¹¹ = 136818013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136820051) 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, 2491 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (9494680).

Almost surely, 2^136820061 is an apocalyptic number.

It is an amenable number.

136820061 is a deficient number, since it is larger than the sum of its proper divisors (91052259).

136820061 is a wasteful number, since it uses less digits than its factorization.

136820061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19345 (or 19342 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 136820061 is about 11697.0107719879. The cubic root of 136820061 is about 515.2878787640.

Adding to 136820061 its reverse (160028631), we get a palindrome (296848692).

The spelling of 136820061 in words is "one hundred thirty-six million, eight hundred twenty thousand, sixty-one".