133687087 has 2 divisors, whose sum is σ = 133687088. Its totient is φ = 133687086.

The previous prime is 133687069. The next prime is 133687111. The reversal of 133687087 is 780786331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133687087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133687067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66843543 + 66843544.

It is an arithmetic number, because the mean of its divisors is an integer number (66843544).

Almost surely, 2^133687087 is an apocalyptic number.

133687087 is a deficient number, since it is larger than the sum of its proper divisors (1).

133687087 is an equidigital number, since it uses as much as digits as its factorization.

133687087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 133687087 is about 11562.3132201130. The cubic root of 133687087 is about 511.3243638977.

The spelling of 133687087 in words is "one hundred thirty-three million, six hundred eighty-seven thousand, eighty-seven".