680516 has 12 divisors (see below), whose sum is σ = 1210860. Its totient is φ = 334560.

The previous prime is 680509. The next prime is 680531. The reversal of 680516 is 615086.

It can be written as a sum of positive squares in 2 ways, for example, as 184900 + 495616 = 430^2 + 704^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (100905).

2⁶⁸⁰⁵¹⁶ is an apocalyptic number.

It is an amenable number.

680516 is a deficient number, since it is larger than the sum of its proper divisors (530344).

680516 is a wasteful number, since it uses less digits than its factorization.

680516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 680516 is about 824.9339367489. The cubic root of 680516 is about 87.9588306048.

The spelling of 680516 in words is "six hundred eighty thousand, five hundred sixteen".