680997307 has 8 divisors (see below), whose sum is σ = 683414480. Its totient is φ = 678585600.

The previous prime is 680997287. The next prime is 680997311. The reversal of 680997307 is 703799086.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680997307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680997337) 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, 605848 + ... + 606970.

It is an arithmetic number, because the mean of its divisors is an integer number (85426810).

Almost surely, 2^680997307 is an apocalyptic number.

680997307 is a deficient number, since it is larger than the sum of its proper divisors (2417173).

680997307 is a wasteful number, since it uses less digits than its factorization.

680997307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 680997307 is about 26095.9251033567. The cubic root of 680997307 is about 879.7956253178.

The spelling of 680997307 in words is "six hundred eighty million, nine hundred ninety-seven thousand, three hundred seven".