680321727 has 16 divisors (see below), whose sum is σ = 1026902880. Its totient is φ = 444989376.

The previous prime is 680321723. The next prime is 680321749. The reversal of 680321727 is 727123086.

It is not a de Polignac number, because 680321727 - 2² = 680321723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680321691 and 680321700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680321723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236278 + ... + 239139.

It is an arithmetic number, because the mean of its divisors is an integer number (64181430).

Almost surely, 2^680321727 is an apocalyptic number.

680321727 is a deficient number, since it is larger than the sum of its proper divisors (346581153).

680321727 is a wasteful number, since it uses less digits than its factorization.

680321727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475479 (or 475473 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 680321727 is about 26082.9777249454. The cubic root of 680321727 is about 879.5045967636.

The spelling of 680321727 in words is "six hundred eighty million, three hundred twenty-one thousand, seven hundred twenty-seven".