136220624 has 20 divisors (see below), whose sum is σ = 264196260. Its totient is φ = 68040960.

The previous prime is 136220597. The next prime is 136220629. The reversal of 136220624 is 426022631.

136220624 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 2 ways, for example, as 13454224 + 122766400 = 3668^2 + 11080^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136220593 and 136220602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136220629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14294 + ... + 21834.

It is an arithmetic number, because the mean of its divisors is an integer number (13209813).

Almost surely, 2^136220624 is an apocalyptic number.

It is an amenable number.

136220624 is a deficient number, since it is larger than the sum of its proper divisors (127975636).

136220624 is a wasteful number, since it uses less digits than its factorization.

136220624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678 (or 8672 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 136220624 is about 11671.3591325089. The cubic root of 136220624 is about 514.5342494789.

The spelling of 136220624 in words is "one hundred thirty-six million, two hundred twenty thousand, six hundred twenty-four".