136636689 has 16 divisors (see below), whose sum is σ = 208503680. Its totient is φ = 77967360.

The previous prime is 136636673. The next prime is 136636697. The reversal of 136636689 is 986636631.

It is not a de Polignac number, because 136636689 - 2⁴ = 136636673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136636649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11919 + ... + 20379.

It is an arithmetic number, because the mean of its divisors is an integer number (13031480).

Almost surely, 2^136636689 is an apocalyptic number.

It is an amenable number.

136636689 is a deficient number, since it is larger than the sum of its proper divisors (71866991).

136636689 is an equidigital number, since it uses as much as digits as its factorization.

136636689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9240.

The product of its digits is 839808, while the sum is 48.

The square root of 136636689 is about 11689.1697309946. The cubic root of 136636689 is about 515.0575723490.

The spelling of 136636689 in words is "one hundred thirty-six million, six hundred thirty-six thousand, six hundred eighty-nine".