680386194 has 24 divisors (see below), whose sum is σ = 1505537280. Its totient is φ = 221969688.

The previous prime is 680386193. The next prime is 680386243. The reversal of 680386194 is 491683086.

680386194 is a `hidden beast` number, since 6 + 80 + 386 + 194 = 666.

680386194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (680386193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401274 + ... + 402965.

It is an arithmetic number, because the mean of its divisors is an integer number (62730720).

Almost surely, 2^680386194 is an apocalyptic number.

680386194 is an abundant number, since it is smaller than the sum of its proper divisors (825151086).

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

680386194 is a wasteful number, since it uses less digits than its factorization.

680386194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804294 (or 804291 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 680386194 is about 26084.2135016565. The cubic root of 680386194 is about 879.5323763811.

The spelling of 680386194 in words is "six hundred eighty million, three hundred eighty-six thousand, one hundred ninety-four".