680397 has 4 divisors (see below), whose sum is σ = 907200. Its totient is φ = 453596.

The previous prime is 680387. The next prime is 680399. The reversal of 680397 is 793086.

It is a happy number.

680397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680397 - 2¹⁰ = 679373 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680399) 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, 113397 + ... + 113402.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

2⁶⁸⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

680397 is a deficient number, since it is larger than the sum of its proper divisors (226803).

680397 is a wasteful number, since it uses less digits than its factorization.

680397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226802.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 680397 is about 824.8618066076. The cubic root of 680397 is about 87.9537032647.

The spelling of 680397 in words is "six hundred eighty thousand, three hundred ninety-seven".