678345006187 has 2 divisors, whose sum is σ = 678345006188. Its totient is φ = 678345006186.

The previous prime is 678345006179. The next prime is 678345006203. The reversal of 678345006187 is 781600543876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678345006187 - 2³ = 678345006179 is a prime.

It is not a weakly prime, because it can be changed into another prime (678345006487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339172503093 + 339172503094.

It is an arithmetic number, because the mean of its divisors is an integer number (339172503094).

Almost surely, 2^678345006187 is an apocalyptic number.

678345006187 is a deficient number, since it is larger than the sum of its proper divisors (1).

678345006187 is an equidigital number, since it uses as much as digits as its factorization.

678345006187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 678345006187 in words is "six hundred seventy-eight billion, three hundred forty-five million, six thousand, one hundred eighty-seven".