680940329 has 8 divisors (see below), whose sum is σ = 708644160. Its totient is φ = 653518096.

The previous prime is 680940319. The next prime is 680940349. The reversal of 680940329 is 923049086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 680940329 - 2²⁴ = 664163113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680940319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65459 + ... + 75144.

It is an arithmetic number, because the mean of its divisors is an integer number (88580520).

Almost surely, 2^680940329 is an apocalyptic number.

It is an amenable number.

680940329 is a deficient number, since it is larger than the sum of its proper divisors (27703831).

680940329 is a wasteful number, since it uses less digits than its factorization.

680940329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140799.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 680940329 is about 26094.8333775098. The cubic root of 680940329 is about 879.7710875833.

The spelling of 680940329 in words is "six hundred eighty million, nine hundred forty thousand, three hundred twenty-nine".