680456811 has 8 divisors (see below), whose sum is σ = 928375360. Its totient is φ = 443088072.

The previous prime is 680456797. The next prime is 680456839. The reversal of 680456811 is 118654086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 680456811 - 2⁹ = 680456299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680456811.

It is not an unprimeable number, because it can be changed into a prime (680456111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2637301 + ... + 2637558.

It is an arithmetic number, because the mean of its divisors is an integer number (116046920).

Almost surely, 2^680456811 is an apocalyptic number.

680456811 is a deficient number, since it is larger than the sum of its proper divisors (247918549).

680456811 is a wasteful number, since it uses less digits than its factorization.

680456811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274905.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 680456811 is about 26085.5671013685. The cubic root of 680456811 is about 879.5628040949.

The spelling of 680456811 in words is "six hundred eighty million, four hundred fifty-six thousand, eight hundred eleven".