667130687 has 2 divisors, whose sum is σ = 667130688. Its totient is φ = 667130686.

The previous prime is 667130599. The next prime is 667130689. The reversal of 667130687 is 786031766.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667130687 - 2¹⁰ = 667129663 is a prime.

Together with 667130689, 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 (667130689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333565343 + 333565344.

It is an arithmetic number, because the mean of its divisors is an integer number (333565344).

Almost surely, 2^667130687 is an apocalyptic number.

667130687 is a deficient number, since it is larger than the sum of its proper divisors (1).

667130687 is an equidigital number, since it uses as much as digits as its factorization.

667130687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 667130687 is about 25828.8731267936. The cubic root of 667130687 is about 873.7830972800.

The spelling of 667130687 in words is "six hundred sixty-seven million, one hundred thirty thousand, six hundred eighty-seven".