680562277 has 2 divisors, whose sum is σ = 680562278. Its totient is φ = 680562276.

The previous prime is 680562271. The next prime is 680562367. The reversal of 680562277 is 772265086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 654029476 + 26532801 = 25574^2 + 5151^2 .

It is a cyclic number.

It is not a de Polignac number, because 680562277 - 2¹¹ = 680560229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680562271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340281138 + 340281139.

It is an arithmetic number, because the mean of its divisors is an integer number (340281139).

Almost surely, 2^680562277 is an apocalyptic number.

It is an amenable number.

680562277 is a deficient number, since it is larger than the sum of its proper divisors (1).

680562277 is an equidigital number, since it uses as much as digits as its factorization.

680562277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 680562277 is about 26087.5885623796. The cubic root of 680562277 is about 879.6082437550.

The spelling of 680562277 in words is "six hundred eighty million, five hundred sixty-two thousand, two hundred seventy-seven".