679710305 has 16 divisors (see below), whose sum is σ = 829071504. Its totient is φ = 534892800.

The previous prime is 679710301. The next prime is 679710359. The reversal of 679710305 is 503017976.

It can be written as a sum of positive squares in 8 ways, for example, as 430336 + 679279969 = 656^2 + 26063^2 .

It is not a de Polignac number, because 679710305 - 2² = 679710301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (679710301) 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, 74999 + ... + 83571.

It is an arithmetic number, because the mean of its divisors is an integer number (51816969).

Almost surely, 2^679710305 is an apocalyptic number.

It is an amenable number.

679710305 is a deficient number, since it is larger than the sum of its proper divisors (149361199).

679710305 is a wasteful number, since it uses less digits than its factorization.

679710305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8836.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 679710305 is about 26071.2543810228. The cubic root of 679710305 is about 879.2410402655.

The spelling of 679710305 in words is "six hundred seventy-nine million, seven hundred ten thousand, three hundred five".