679170857 has 2 divisors, whose sum is σ = 679170858. Its totient is φ = 679170856.

The previous prime is 679170799. The next prime is 679170883. The reversal of 679170857 is 758071976.

679170857 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 can be written as a sum of positive squares in only one way, i.e., 658640896 + 20529961 = 25664^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 679170857 - 2⁸ = 679170601 is a prime.

It is a super-2 number, since 2×679170857² = 922546105996228898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (679173857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339585428 + 339585429.

It is an arithmetic number, because the mean of its divisors is an integer number (339585429).

Almost surely, 2^679170857 is an apocalyptic number.

It is an amenable number.

679170857 is a deficient number, since it is larger than the sum of its proper divisors (1).

679170857 is an equidigital number, since it uses as much as digits as its factorization.

679170857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 679170857 is about 26060.9066803133. The cubic root of 679170857 is about 879.0083772476.

The spelling of 679170857 in words is "six hundred seventy-nine million, one hundred seventy thousand, eight hundred fifty-seven".