680244379 has 2 divisors, whose sum is σ = 680244380. Its totient is φ = 680244378.

The previous prime is 680244361. The next prime is 680244421. The reversal of 680244379 is 973442086.

680244379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680244379 - 2⁹ = 680243867 is a prime.

It is a super-2 number, since 2×680244379² = 925464830322191282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (680244359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340122189 + 340122190.

It is an arithmetic number, because the mean of its divisors is an integer number (340122190).

Almost surely, 2^680244379 is an apocalyptic number.

680244379 is a deficient number, since it is larger than the sum of its proper divisors (1).

680244379 is an equidigital number, since it uses as much as digits as its factorization.

680244379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 680244379 is about 26081.4949533189. The cubic root of 680244379 is about 879.4712642499.

The spelling of 680244379 in words is "six hundred eighty million, two hundred forty-four thousand, three hundred seventy-nine".