136288987 has 2 divisors, whose sum is σ = 136288988. Its totient is φ = 136288986.

The previous prime is 136288969. The next prime is 136289057. The reversal of 136288987 is 789882631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136288987 - 2¹¹ = 136286939 is a prime.

It is not a weakly prime, because it can be changed into another prime (136288937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68144493 + 68144494.

It is an arithmetic number, because the mean of its divisors is an integer number (68144494).

Almost surely, 2^136288987 is an apocalyptic number.

136288987 is a deficient number, since it is larger than the sum of its proper divisors (1).

136288987 is an equidigital number, since it uses as much as digits as its factorization.

136288987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 52.

The square root of 136288987 is about 11674.2874300747. The cubic root of 136288987 is about 514.6203089444.

The spelling of 136288987 in words is "one hundred thirty-six million, two hundred eighty-eight thousand, nine hundred eighty-seven".