136335621 has 12 divisors (see below), whose sum is σ = 191853312. Its totient is φ = 86106024.

The previous prime is 136335611. The next prime is 136335637. The reversal of 136335621 is 126533631.

It is a happy number.

It is not a de Polignac number, because 136335621 - 2¹¹ = 136333573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136335611) 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 11 ways as a sum of consecutive naturals, for example, 61861 + ... + 64026.

It is an arithmetic number, because the mean of its divisors is an integer number (15987776).

Almost surely, 2^136335621 is an apocalyptic number.

It is an amenable number.

136335621 is a deficient number, since it is larger than the sum of its proper divisors (55517691).

136335621 is a wasteful number, since it uses less digits than its factorization.

136335621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125928 (or 125909 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 136335621 is about 11676.2845546004. The cubic root of 136335621 is about 514.6789981247.

The spelling of 136335621 in words is "one hundred thirty-six million, three hundred thirty-five thousand, six hundred twenty-one".