136651589 has 2 divisors, whose sum is σ = 136651590. Its totient is φ = 136651588.

The previous prime is 136651583. The next prime is 136651597. The reversal of 136651589 is 985156631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133795489 + 2856100 = 11567^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 136651589 - 2⁴ = 136651573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136651583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68325794 + 68325795.

It is an arithmetic number, because the mean of its divisors is an integer number (68325795).

Almost surely, 2^136651589 is an apocalyptic number.

It is an amenable number.

136651589 is a deficient number, since it is larger than the sum of its proper divisors (1).

136651589 is an equidigital number, since it uses as much as digits as its factorization.

136651589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 136651589 is about 11689.8070557217. The cubic root of 136651589 is about 515.0762937211.

The spelling of 136651589 in words is "one hundred thirty-six million, six hundred fifty-one thousand, five hundred eighty-nine".