134666687 has 2 divisors, whose sum is σ = 134666688. Its totient is φ = 134666686.

The previous prime is 134666663. The next prime is 134666689. The reversal of 134666687 is 786666431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134666687 - 2²⁶ = 67557823 is a prime.

Together with 134666689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134666689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67333343 + 67333344.

It is an arithmetic number, because the mean of its divisors is an integer number (67333344).

Almost surely, 2^134666687 is an apocalyptic number.

134666687 is a deficient number, since it is larger than the sum of its proper divisors (1).

134666687 is an equidigital number, since it uses as much as digits as its factorization.

134666687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 134666687 is about 11604.5976664424. The cubic root of 134666687 is about 512.5702455370.

The spelling of 134666687 in words is "one hundred thirty-four million, six hundred sixty-six thousand, six hundred eighty-seven".