680497 has 4 divisors (see below), whose sum is σ = 682596. Its totient is φ = 678400.

The previous prime is 680489. The next prime is 680503. The reversal of 680497 is 794086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 14641 = 816^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 680497 - 2³ = 680489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448 + ... + 1249.

It is an arithmetic number, because the mean of its divisors is an integer number (170649).

2⁶⁸⁰⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

680497 is a deficient number, since it is larger than the sum of its proper divisors (2099).

680497 is a wasteful number, since it uses less digits than its factorization.

680497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 680497 is about 824.9224205948. The cubic root of 680497 is about 87.9580119940.

The spelling of 680497 in words is "six hundred eighty thousand, four hundred ninety-seven".