680704994 has 32 divisors (see below), whose sum is σ = 1072293120. Its totient is φ = 323672832.

The previous prime is 680704993. The next prime is 680705009. The reversal of 680704994 is 499407086.

680704994 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 (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (680704991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1854599 + ... + 1854965.

It is an arithmetic number, because the mean of its divisors is an integer number (33509160).

Almost surely, 2^680704994 is an apocalyptic number.

680704994 is a deficient number, since it is larger than the sum of its proper divisors (391588126).

680704994 is a wasteful number, since it uses less digits than its factorization.

680704994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 680704994 is about 26090.3237618854. The cubic root of 680704994 is about 879.6697254052.

The spelling of 680704994 in words is "six hundred eighty million, seven hundred four thousand, nine hundred ninety-four".