681422 has 8 divisors (see below), whose sum is σ = 1168176. Its totient is φ = 292032.

The previous prime is 681419. The next prime is 681427. The reversal of 681422 is 224186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24323 + ... + 24350.

It is an arithmetic number, because the mean of its divisors is an integer number (146022).

2⁶⁸¹⁴²² is an apocalyptic number.

681422 is a deficient number, since it is larger than the sum of its proper divisors (486754).

681422 is a wasteful number, since it uses less digits than its factorization.

681422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48682.

The product of its digits is 768, while the sum is 23.

The square root of 681422 is about 825.4828889807. The cubic root of 681422 is about 87.9978477435.

The spelling of 681422 in words is "six hundred eighty-one thousand, four hundred twenty-two".