680613379 has 2 divisors, whose sum is σ = 680613380. Its totient is φ = 680613378.

The previous prime is 680613371. The next prime is 680613413. The reversal of 680613379 is 973316086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680613379 - 2³ = 680613371 is a prime.

It is not a weakly prime, because it can be changed into another prime (680613371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340306689 + 340306690.

It is an arithmetic number, because the mean of its divisors is an integer number (340306690).

Almost surely, 2^680613379 is an apocalyptic number.

680613379 is a deficient number, since it is larger than the sum of its proper divisors (1).

680613379 is an equidigital number, since it uses as much as digits as its factorization.

680613379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 680613379 is about 26088.5679752646. The cubic root of 680613379 is about 879.6302591859.

The spelling of 680613379 in words is "six hundred eighty million, six hundred thirteen thousand, three hundred seventy-nine".