680913 has 8 divisors (see below), whose sum is σ = 1008800. Its totient is φ = 453924.

The previous prime is 680881. The next prime is 680917. The reversal of 680913 is 319086.

680913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 680913 - 2⁵ = 680881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 25219 = 680913 / (6 + 8 + 0 + 9 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (680917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12583 + ... + 12636.

It is an arithmetic number, because the mean of its divisors is an integer number (126100).

2⁶⁸⁰⁹¹³ is an apocalyptic number.

It is an amenable number.

680913 is a deficient number, since it is larger than the sum of its proper divisors (327887).

680913 is a wasteful number, since it uses less digits than its factorization.

680913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25228 (or 25222 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 680913 is about 825.1745269941. The cubic root of 680913 is about 87.9759317788.

Adding to 680913 its reverse (319086), we get a palindrome (999999).

The spelling of 680913 in words is "six hundred eighty thousand, nine hundred thirteen".