136487287 has 2 divisors, whose sum is σ = 136487288. Its totient is φ = 136487286.

The previous prime is 136487251. The next prime is 136487341. The reversal of 136487287 is 782784631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136487287 - 2⁷ = 136487159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136487207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68243643 + 68243644.

It is an arithmetic number, because the mean of its divisors is an integer number (68243644).

Almost surely, 2^136487287 is an apocalyptic number.

136487287 is a deficient number, since it is larger than the sum of its proper divisors (1).

136487287 is an equidigital number, since it uses as much as digits as its factorization.

136487287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 46.

The square root of 136487287 is about 11682.7773667052. Note that the first 3 decimals coincide. The cubic root of 136487287 is about 514.8697782418.

The spelling of 136487287 in words is "one hundred thirty-six million, four hundred eighty-seven thousand, two hundred eighty-seven".