678084299 has 2 divisors, whose sum is σ = 678084300. Its totient is φ = 678084298.

The previous prime is 678084271. The next prime is 678084301. The reversal of 678084299 is 992480876.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678084299 is a prime.

Together with 678084301, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678084299.

It is not a weakly prime, because it can be changed into another prime (678084259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339042149 + 339042150.

It is an arithmetic number, because the mean of its divisors is an integer number (339042150).

Almost surely, 2^678084299 is an apocalyptic number.

678084299 is a deficient number, since it is larger than the sum of its proper divisors (1).

678084299 is an equidigital number, since it uses as much as digits as its factorization.

678084299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 678084299 is about 26040.0518240652. The cubic root of 678084299 is about 878.5393723540.

The spelling of 678084299 in words is "six hundred seventy-eight million, eighty-four thousand, two hundred ninety-nine".