680037667 has 2 divisors, whose sum is σ = 680037668. Its totient is φ = 680037666.

The previous prime is 680037643. The next prime is 680037671. The reversal of 680037667 is 766730086.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680037667 is a prime.

It is not a weakly prime, because it can be changed into another prime (680037367) 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, 340018833 + 340018834.

It is an arithmetic number, because the mean of its divisors is an integer number (340018834).

Almost surely, 2^680037667 is an apocalyptic number.

680037667 is a deficient number, since it is larger than the sum of its proper divisors (1).

680037667 is an equidigital number, since it uses as much as digits as its factorization.

680037667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 680037667 is about 26077.5318425652. The cubic root of 680037667 is about 879.3821709341.

The spelling of 680037667 in words is "six hundred eighty million, thirty-seven thousand, six hundred sixty-seven".