680594 has 4 divisors (see below), whose sum is σ = 1020894. Its totient is φ = 340296.

The previous prime is 680587. The next prime is 680597. The reversal of 680594 is 495086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 508369 + 172225 = 713^2 + 415^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 680594.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680594.

It is not an unprimeable number, because it can be changed into a prime (680597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170147 + ... + 170150.

2⁶⁸⁰⁵⁹⁴ is an apocalyptic number.

680594 is a deficient number, since it is larger than the sum of its proper divisors (340300).

680594 is a wasteful number, since it uses less digits than its factorization.

680594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340299.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 680594 is about 824.9812119073. The cubic root of 680594 is about 87.9621910581.

The spelling of 680594 in words is "six hundred eighty thousand, five hundred ninety-four".