680871751 has 8 divisors (see below), whose sum is σ = 794695680. Its totient is φ = 571186968.

The previous prime is 680871733. The next prime is 680871781. The reversal of 680871751 is 157178086.

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 680871751 - 2¹⁷ = 680740679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680871698 and 680871707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680871721) 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, 1034431 + ... + 1035088.

It is an arithmetic number, because the mean of its divisors is an integer number (99336960).

Almost surely, 2^680871751 is an apocalyptic number.

680871751 is a deficient number, since it is larger than the sum of its proper divisors (113823929).

680871751 is a wasteful number, since it uses less digits than its factorization.

680871751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069573.

The product of its (nonzero) digits is 94080, while the sum is 43.

The square root of 680871751 is about 26093.5193295194. The cubic root of 680871751 is about 879.7415524613.

The spelling of 680871751 in words is "six hundred eighty million, eight hundred seventy-one thousand, seven hundred fifty-one".