680851667 has 8 divisors (see below), whose sum is σ = 703352832. Its totient is φ = 658384200.

The previous prime is 680851663. The next prime is 680851711. The reversal of 680851667 is 766158086.

680851667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 680851667 - 2² = 680851663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680851663) 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, 36542 + ... + 51932.

It is an arithmetic number, because the mean of its divisors is an integer number (87919104).

Almost surely, 2^680851667 is an apocalyptic number.

680851667 is a deficient number, since it is larger than the sum of its proper divisors (22501165).

680851667 is a wasteful number, since it uses less digits than its factorization.

680851667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16849.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 680851667 is about 26093.1344801655. The cubic root of 680851667 is about 879.7329023237.

The spelling of 680851667 in words is "six hundred eighty million, eight hundred fifty-one thousand, six hundred sixty-seven".