136107649 has 4 divisors (see below), whose sum is σ = 136692036. Its totient is φ = 135523264.

The previous prime is 136107641. The next prime is 136107677. The reversal of 136107649 is 946701631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71707024 + 64400625 = 8468^2 + 8025^2 .

It is a cyclic number.

It is not a de Polignac number, because 136107649 - 2³ = 136107641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136107641) 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 3 ways as a sum of consecutive naturals, for example, 291844 + ... + 292309.

It is an arithmetic number, because the mean of its divisors is an integer number (34173009).

Almost surely, 2^136107649 is an apocalyptic number.

It is an amenable number.

136107649 is a deficient number, since it is larger than the sum of its proper divisors (584387).

136107649 is an equidigital number, since it uses as much as digits as its factorization.

136107649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584386.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 136107649 is about 11666.5182895327. The cubic root of 136107649 is about 514.3919666084.

The spelling of 136107649 in words is "one hundred thirty-six million, one hundred seven thousand, six hundred forty-nine".