681058206 has 20 divisors (see below), whose sum is σ = 1526075232. Its totient is φ = 227019348.

The previous prime is 681058187. The next prime is 681058219. The reversal of 681058206 is 602850186.

It is a happy number.

681058206 is a `hidden beast` number, since 68 + 10 + 582 + 0 + 6 = 666.

681058206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2101870 + ... + 2102193.

Almost surely, 2^681058206 is an apocalyptic number.

681058206 is an abundant number, since it is smaller than the sum of its proper divisors (845017026).

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

681058206 is a wasteful number, since it uses less digits than its factorization.

681058206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204077 (or 4204068 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 681058206 is about 26097.0919069539. The cubic root of 681058206 is about 879.8218501287.

The spelling of 681058206 in words is "six hundred eighty-one million, fifty-eight thousand, two hundred six".