681068 has 6 divisors (see below), whose sum is σ = 1191876. Its totient is φ = 340532.

The previous prime is 681067. The next prime is 681089. The reversal of 681068 is 860186.

It is a self number, because there is not a number n which added to its sum of digits gives 681068.

It is not an unprimeable number, because it can be changed into a prime (681061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85130 + ... + 85137.

It is an arithmetic number, because the mean of its divisors is an integer number (198646).

2⁶⁸¹⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

681068 is a deficient number, since it is larger than the sum of its proper divisors (510808).

681068 is a wasteful number, since it uses less digits than its factorization.

681068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170271 (or 170269 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 681068 is about 825.2684411754. The cubic root of 681068 is about 87.9826067553.

The spelling of 681068 in words is "six hundred eighty-one thousand, sixty-eight".