681332 has 12 divisors (see below), whose sum is σ = 1212960. Its totient is φ = 334776.

The previous prime is 681311. The next prime is 681337. The reversal of 681332 is 233186.

681332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 681298 and 681307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681337) by changing a digit.

681332 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 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (101080).

2⁶⁸¹³³² is an apocalyptic number.

It is an amenable number.

681332 is a deficient number, since it is larger than the sum of its proper divisors (531628).

681332 is a wasteful number, since it uses less digits than its factorization.

681332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950 (or 2948 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 681332 is about 825.4283736340. The cubic root of 681332 is about 87.9939734165.

The spelling of 681332 in words is "six hundred eighty-one thousand, three hundred thirty-two".