681846 has 16 divisors (see below), whose sum is σ = 1487808. Its totient is φ = 206600.

The previous prime is 681841. The next prime is 681883. The reversal of 681846 is 648186.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5100 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (92988).

2⁶⁸¹⁸⁴⁶ is an apocalyptic number.

681846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

681846 is an abundant number, since it is smaller than the sum of its proper divisors (805962).

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

681846 is a wasteful number, since it uses less digits than its factorization.

681846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347.

The product of its digits is 9216, while the sum is 33.

The square root of 681846 is about 825.7396684186. The cubic root of 681846 is about 88.0160955407.

The spelling of 681846 in words is "six hundred eighty-one thousand, eight hundred forty-six".