681292 has 24 divisors (see below), whose sum is σ = 1297296. Its totient is φ = 311808.

The previous prime is 681271. The next prime is 681293. The reversal of 681292 is 292186.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 681292.

It is not an unprimeable number, because it can be changed into a prime (681293) 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, 2808 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2⁶⁸¹²⁹² is an apocalyptic number.

It is an amenable number.

681292 is a deficient number, since it is larger than the sum of its proper divisors (616004).

681292 is a wasteful number, since it uses less digits than its factorization.

681292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 681292 is about 825.4041434352. The cubic root of 681292 is about 87.9922513839.

The spelling of 681292 in words is "six hundred eighty-one thousand, two hundred ninety-two".