680161706 has 16 divisors (see below), whose sum is σ = 1168771200. Its totient is φ = 290802960.

The previous prime is 680161697. The next prime is 680161723. The reversal of 680161706 is 607161086.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51806 + ... + 63593.

It is an arithmetic number, because the mean of its divisors is an integer number (73048200).

Almost surely, 2^680161706 is an apocalyptic number.

680161706 is a deficient number, since it is larger than the sum of its proper divisors (488609494).

680161706 is a wasteful number, since it uses less digits than its factorization.

680161706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115829.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 680161706 is about 26079.9100075134. The cubic root of 680161706 is about 879.4356341755.

The spelling of 680161706 in words is "six hundred eighty million, one hundred sixty-one thousand, seven hundred six".