680017567 has 2 divisors, whose sum is σ = 680017568. Its totient is φ = 680017566.

The previous prime is 680017553. The next prime is 680017621. The reversal of 680017567 is 765710086.

680017567 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 a de Polignac number, because none of the positive numbers 2^k-680017567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680017967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340008783 + 340008784.

It is an arithmetic number, because the mean of its divisors is an integer number (340008784).

Almost surely, 2^680017567 is an apocalyptic number.

680017567 is a deficient number, since it is larger than the sum of its proper divisors (1).

680017567 is an equidigital number, since it uses as much as digits as its factorization.

680017567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 680017567 is about 26077.1464504842. The cubic root of 680017567 is about 879.3735068279.

The spelling of 680017567 in words is "six hundred eighty million, seventeen thousand, five hundred sixty-seven".