680973 has 4 divisors (see below), whose sum is σ = 907968. Its totient is φ = 453980.

The previous prime is 680971. The next prime is 680987. The reversal of 680973 is 379086.

It is a happy number.

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 680973 - 2¹ = 680971 is a prime.

It is a D-number.

680973 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680973.

It is not an unprimeable number, because it can be changed into a prime (680971) 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, 113493 + ... + 113498.

It is an arithmetic number, because the mean of its divisors is an integer number (226992).

2⁶⁸⁰⁹⁷³ is an apocalyptic number.

It is an amenable number.

680973 is a deficient number, since it is larger than the sum of its proper divisors (226995).

680973 is a wasteful number, since it uses less digits than its factorization.

680973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226994.

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

The square root of 680973 is about 825.2108821386. The cubic root of 680973 is about 87.9785157608.

It can be divided in two parts, 680 and 973, that added together give a triangular number (1653 = T₅₇).

The spelling of 680973 in words is "six hundred eighty thousand, nine hundred seventy-three".