680613 has 4 divisors (see below), whose sum is σ = 907488. Its totient is φ = 453740.

The previous prime is 680611. The next prime is 680623. The reversal of 680613 is 316086.

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 680613 - 2¹ = 680611 is a prime.

It is a D-number.

680613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680611) 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, 113433 + ... + 113438.

It is an arithmetic number, because the mean of its divisors is an integer number (226872).

2⁶⁸⁰⁶¹³ is an apocalyptic number.

It is an amenable number.

680613 is a deficient number, since it is larger than the sum of its proper divisors (226875).

680613 is a wasteful number, since it uses less digits than its factorization.

680613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226874.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 680613 is about 824.9927272407. The cubic root of 680613 is about 87.9630095912.

Adding to 680613 its reverse (316086), we get a palindrome (996699).

The spelling of 680613 in words is "six hundred eighty thousand, six hundred thirteen".