680344071 has 16 divisors (see below), whose sum is σ = 1032618240. Its totient is φ = 394401920.

The previous prime is 680344051. The next prime is 680344099. The reversal of 680344071 is 170443086.

It is not a de Polignac number, because 680344071 - 2¹⁰ = 680343047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680344051) 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 15 ways as a sum of consecutive naturals, for example, 447426 + ... + 448943.

It is an arithmetic number, because the mean of its divisors is an integer number (64538640).

Almost surely, 2^680344071 is an apocalyptic number.

680344071 is a deficient number, since it is larger than the sum of its proper divisors (352274169).

680344071 is a wasteful number, since it uses less digits than its factorization.

680344071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896406.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 680344071 is about 26083.4060467570. The cubic root of 680344071 is about 879.5142252648.

The spelling of 680344071 in words is "six hundred eighty million, three hundred forty-four thousand, seventy-one".