680407771 has 4 divisors (see below), whose sum is σ = 680635872. Its totient is φ = 680179672.

The previous prime is 680407733. The next prime is 680407787. The reversal of 680407771 is 177704086.

680407771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680407771 - 2¹⁷ = 680276699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680407571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109516 + ... + 115561.

It is an arithmetic number, because the mean of its divisors is an integer number (170158968).

Almost surely, 2^680407771 is an apocalyptic number.

680407771 is a deficient number, since it is larger than the sum of its proper divisors (228101).

680407771 is a wasteful number, since it uses less digits than its factorization.

680407771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228100.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 680407771 is about 26084.6271010340. The cubic root of 680407771 is about 879.5416737819.

The spelling of 680407771 in words is "six hundred eighty million, four hundred seven thousand, seven hundred seventy-one".