680494 has 8 divisors (see below), whose sum is σ = 1032480. Its totient is φ = 336336.

The previous prime is 680489. The next prime is 680503. The reversal of 680494 is 494086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

680494 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (129060).

2⁶⁸⁰⁴⁹⁴ is an apocalyptic number.

680494 is a deficient number, since it is larger than the sum of its proper divisors (351986).

680494 is a wasteful number, since it uses less digits than its factorization.

680494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 680494 is about 824.9206022400. The cubic root of 680494 is about 87.9578827382.

The spelling of 680494 in words is "six hundred eighty thousand, four hundred ninety-four".