680997306 has 16 divisors (see below), whose sum is σ = 1485812448. Its totient is φ = 206362800.

The previous prime is 680997287. The next prime is 680997311. The reversal of 680997306 is 603799086.

It is a happy number.

680997306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5159005 + ... + 5159136.

It is an arithmetic number, because the mean of its divisors is an integer number (92863278).

Almost surely, 2^680997306 is an apocalyptic number.

680997306 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

680997306 is an abundant number, since it is smaller than the sum of its proper divisors (804815142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680997306 is a wasteful number, since it uses less digits than its factorization.

680997306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10318157.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 680997306 is about 26095.9250841966. The cubic root of 680997306 is about 879.7956248872.

The spelling of 680997306 in words is "six hundred eighty million, nine hundred ninety-seven thousand, three hundred six".