680386 has 16 divisors (see below), whose sum is σ = 1217664. Its totient is φ = 278784.

The previous prime is 680377. The next prime is 680387. The reversal of 680386 is 683086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680387) by changing a digit.

680386 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (76104).

2⁶⁸⁰³⁸⁶ is an apocalyptic number.

680386 is a deficient number, since it is larger than the sum of its proper divisors (537278).

680386 is a wasteful number, since it uses less digits than its factorization.

680386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 680386 is about 824.8551387971. The cubic root of 680386 is about 87.9532292787.

It can be divided in two parts, 6803 and 86, that added together give a square (6889 = 83²).

The spelling of 680386 in words is "six hundred eighty thousand, three hundred eighty-six".