681022 has 8 divisors (see below), whose sum is σ = 1049256. Its totient is φ = 331272.

The previous prime is 681019. The next prime is 681041. The reversal of 681022 is 220186.

It is a happy number.

681022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4528 + ... + 4675.

It is an arithmetic number, because the mean of its divisors is an integer number (131157).

2⁶⁸¹⁰²² is an apocalyptic number.

681022 is a deficient number, since it is larger than the sum of its proper divisors (368234).

681022 is a wasteful number, since it uses less digits than its factorization.

681022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 681022 is about 825.2405709852. The cubic root of 681022 is about 87.9806259002.

It can be divided in two parts, 68 and 1022, that multiplied together give a palindrome (69496).

The spelling of 681022 in words is "six hundred eighty-one thousand, twenty-two".