136560287 has 2 divisors, whose sum is σ = 136560288. Its totient is φ = 136560286.

The previous prime is 136560251. The next prime is 136560293. The reversal of 136560287 is 782065631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136560287 - 2¹² = 136556191 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136560287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136560227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68280143 + 68280144.

It is an arithmetic number, because the mean of its divisors is an integer number (68280144).

Almost surely, 2^136560287 is an apocalyptic number.

136560287 is a deficient number, since it is larger than the sum of its proper divisors (1).

136560287 is an equidigital number, since it uses as much as digits as its factorization.

136560287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 136560287 is about 11685.9012061544. The cubic root of 136560287 is about 514.9615542985.

The spelling of 136560287 in words is "one hundred thirty-six million, five hundred sixty thousand, two hundred eighty-seven".