680746 has 24 divisors (see below), whose sum is σ = 1173060. Its totient is φ = 295680.

The previous prime is 680707. The next prime is 680749. The reversal of 680746 is 647086.

It can be written as a sum of positive squares in 2 ways, for example, as 680625 + 121 = 825^2 + 11^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (680749) 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, 6970 + ... + 7066.

2⁶⁸⁰⁷⁴⁶ is an apocalyptic number.

680746 is a deficient number, since it is larger than the sum of its proper divisors (492314).

680746 is a wasteful number, since it uses less digits than its factorization.

680746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 680746 is about 825.0733300744. The cubic root of 680746 is about 87.9687388961.

The spelling of 680746 in words is "six hundred eighty thousand, seven hundred forty-six".