136881659 has 2 divisors, whose sum is σ = 136881660. Its totient is φ = 136881658.

The previous prime is 136881631. The next prime is 136881673. The reversal of 136881659 is 956188631.

136881659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136881659 - 2¹⁶ = 136816123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136881629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68440829 + 68440830.

It is an arithmetic number, because the mean of its divisors is an integer number (68440830).

Almost surely, 2^136881659 is an apocalyptic number.

136881659 is a deficient number, since it is larger than the sum of its proper divisors (1).

136881659 is an equidigital number, since it uses as much as digits as its factorization.

136881659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 136881659 is about 11699.6435415785. The cubic root of 136881659 is about 515.3651967157.

The spelling of 136881659 in words is "one hundred thirty-six million, eight hundred eighty-one thousand, six hundred fifty-nine".