680511 has 8 divisors (see below), whose sum is σ = 977200. Its totient is φ = 418752.

The previous prime is 680509. The next prime is 680531. The reversal of 680511 is 115086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 680511 - 2¹ = 680509 is a prime.

It is a super-2 number, since 2×680511² = 926190442242, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

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 680511.

It is not an unprimeable number, because it can be changed into a prime (680531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8686 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (122150).

2⁶⁸⁰⁵¹¹ is an apocalyptic number.

680511 is a deficient number, since it is larger than the sum of its proper divisors (296689).

680511 is a wasteful number, since it uses less digits than its factorization.

680511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17465.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 680511 is about 824.9309061976. The cubic root of 680511 is about 87.9586151824.

Adding to 680511 its reverse (115086), we get a palindrome (795597).

The spelling of 680511 in words is "six hundred eighty thousand, five hundred eleven".