680958737 has 2 divisors, whose sum is σ = 680958738. Its totient is φ = 680958736.

The previous prime is 680958703. The next prime is 680958797. The reversal of 680958737 is 737859086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632572801 + 48385936 = 25151^2 + 6956^2 .

It is a cyclic number.

It is not a de Polignac number, because 680958737 - 2¹⁶ = 680893201 is a prime.

It is not a weakly prime, because it can be changed into another prime (680958797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340479368 + 340479369.

It is an arithmetic number, because the mean of its divisors is an integer number (340479369).

Almost surely, 2^680958737 is an apocalyptic number.

It is an amenable number.

680958737 is a deficient number, since it is larger than the sum of its proper divisors (1).

680958737 is an equidigital number, since it uses as much as digits as its factorization.

680958737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 680958737 is about 26095.1860886256. The cubic root of 680958737 is about 879.7790151895.

The spelling of 680958737 in words is "six hundred eighty million, nine hundred fifty-eight thousand, seven hundred thirty-seven".