679871347 has 2 divisors, whose sum is σ = 679871348. Its totient is φ = 679871346.

The previous prime is 679871303. The next prime is 679871371. The reversal of 679871347 is 743178976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679871347 - 2¹⁹ = 679347059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 679871294 and 679871303.

It is not a weakly prime, because it can be changed into another prime (679871147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339935673 + 339935674.

It is an arithmetic number, because the mean of its divisors is an integer number (339935674).

Almost surely, 2^679871347 is an apocalyptic number.

679871347 is a deficient number, since it is larger than the sum of its proper divisors (1).

679871347 is an equidigital number, since it uses as much as digits as its factorization.

679871347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The square root of 679871347 is about 26074.3426954545. The cubic root of 679871347 is about 879.3104735488.

The spelling of 679871347 in words is "six hundred seventy-nine million, eight hundred seventy-one thousand, three hundred forty-seven".