680065939 has 8 divisors (see below), whose sum is σ = 777407328. Its totient is φ = 582771840.

The previous prime is 680065931. The next prime is 680065951. The reversal of 680065939 is 939560086.

680065939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 680065939 - 2³ = 680065931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680065931) 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, 27909 + ... + 46249.

It is an arithmetic number, because the mean of its divisors is an integer number (97175916).

Almost surely, 2^680065939 is an apocalyptic number.

680065939 is a deficient number, since it is larger than the sum of its proper divisors (97341389).

680065939 is a wasteful number, since it uses less digits than its factorization.

680065939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23645.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 680065939 is about 26078.0739127720. The cubic root of 680065939 is about 879.3943572925.

The spelling of 680065939 in words is "six hundred eighty million, sixty-five thousand, nine hundred thirty-nine".