680428783 has 2 divisors, whose sum is σ = 680428784. Its totient is φ = 680428782.

The previous prime is 680428781. The next prime is 680428811. The reversal of 680428783 is 387824086.

680428783 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 not a de Polignac number, because 680428783 - 2¹ = 680428781 is a prime.

It is a super-2 number, since 2×680428783² = 925966657469722178, which contains 22 as substring.

Together with 680428781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680428781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340214391 + 340214392.

It is an arithmetic number, because the mean of its divisors is an integer number (340214392).

Almost surely, 2^680428783 is an apocalyptic number.

680428783 is a deficient number, since it is larger than the sum of its proper divisors (1).

680428783 is an equidigital number, since it uses as much as digits as its factorization.

680428783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 680428783 is about 26085.0298638894. The cubic root of 680428783 is about 879.5507275387.

The spelling of 680428783 in words is "six hundred eighty million, four hundred twenty-eight thousand, seven hundred eighty-three".