680456810 has 24 divisors (see below), whose sum is σ = 1346294628. Its totient is φ = 247438400.

The previous prime is 680456797. The next prime is 680456839. The reversal of 680456810 is 18654086.

680456810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 679071481 + 1385329 = 26059^2 + 1177^2 .

It is a super-2 number, since 2×680456810² = 926042940550752200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279971 + ... + 282390.

Almost surely, 2^680456810 is an apocalyptic number.

680456810 is a deficient number, since it is larger than the sum of its proper divisors (665837818).

680456810 is a wasteful number, since it uses less digits than its factorization.

680456810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562390 (or 562379 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 680456810 is about 26085.5670822008. The cubic root of 680456810 is about 879.5628036640.

The spelling of 680456810 in words is "six hundred eighty million, four hundred fifty-six thousand, eight hundred ten".