678299 has 2 divisors, whose sum is σ = 678300. Its totient is φ = 678298.

The previous prime is 678289. The next prime is 678329. The reversal of 678299 is 992876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678299 - 2¹⁶ = 612763 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (678229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339149 + 339150.

It is an arithmetic number, because the mean of its divisors is an integer number (339150).

2⁶⁷⁸²⁹⁹ is an apocalyptic number.

678299 is a deficient number, since it is larger than the sum of its proper divisors (1).

678299 is an equidigital number, since it uses as much as digits as its factorization.

678299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 678299 is about 823.5890965767. The cubic root of 678299 is about 87.8632086184.

The spelling of 678299 in words is "six hundred seventy-eight thousand, two hundred ninety-nine".