678312611 has 2 divisors, whose sum is σ = 678312612. Its totient is φ = 678312610.

The previous prime is 678312539. The next prime is 678312617. The reversal of 678312611 is 116213876.

678312611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678312611 - 2¹⁰ = 678311587 is a prime.

It is equal to p_35187047 and since 678312611 and 35187047 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (678312617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339156305 + 339156306.

It is an arithmetic number, because the mean of its divisors is an integer number (339156306).

Almost surely, 2^678312611 is an apocalyptic number.

678312611 is a deficient number, since it is larger than the sum of its proper divisors (1).

678312611 is an equidigital number, since it uses as much as digits as its factorization.

678312611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 678312611 is about 26044.4353173571. The cubic root of 678312611 is about 878.6379631308.

The spelling of 678312611 in words is "six hundred seventy-eight million, three hundred twelve thousand, six hundred eleven".