136554689 has 2 divisors, whose sum is σ = 136554690. Its totient is φ = 136554688.

The previous prime is 136554683. The next prime is 136554763. The reversal of 136554689 is 986455631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134745664 + 1809025 = 11608^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 136554689 - 2⁴ = 136554673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (136554683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68277344 + 68277345.

It is an arithmetic number, because the mean of its divisors is an integer number (68277345).

Almost surely, 2^136554689 is an apocalyptic number.

It is an amenable number.

136554689 is a deficient number, since it is larger than the sum of its proper divisors (1).

136554689 is an equidigital number, since it uses as much as digits as its factorization.

136554689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 47.

The square root of 136554689 is about 11685.6616843035. The cubic root of 136554689 is about 514.9545176159.

The spelling of 136554689 in words is "one hundred thirty-six million, five hundred fifty-four thousand, six hundred eighty-nine".