678065259 has 16 divisors (see below), whose sum is σ = 923468288. Its totient is φ = 442439712.

The previous prime is 678065249. The next prime is 678065273. The reversal of 678065259 is 952560876.

It is a happy number.

678065259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 678065259 - 2⁴ = 678065243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678065209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20814 + ... + 42300.

It is an arithmetic number, because the mean of its divisors is an integer number (57716768).

Almost surely, 2^678065259 is an apocalyptic number.

678065259 is a deficient number, since it is larger than the sum of its proper divisors (245403029).

678065259 is a wasteful number, since it uses less digits than its factorization.

678065259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21714.

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 678065259 is about 26039.6862308285. The cubic root of 678065259 is about 878.5311494107.

The spelling of 678065259 in words is "six hundred seventy-eight million, sixty-five thousand, two hundred fifty-nine".