681016 has 16 divisors (see below), whose sum is σ = 1459440. Its totient is φ = 291840.

The previous prime is 681011. The next prime is 681019. The reversal of 681016 is 610186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681011) 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, 6025 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (91215).

2⁶⁸¹⁰¹⁶ is an apocalyptic number.

It is an amenable number.

681016 is an abundant number, since it is smaller than the sum of its proper divisors (778424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681016 is a wasteful number, since it uses less digits than its factorization.

681016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174 (or 12170 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 681016 is about 825.2369356736. The cubic root of 681016 is about 87.9803675212.

The spelling of 681016 in words is "six hundred eighty-one thousand, sixteen".