681270 has 16 divisors (see below), whose sum is σ = 1635120. Its totient is φ = 181664.

The previous prime is 681259. The next prime is 681271. The reversal of 681270 is 72186.

681270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 681270.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681270.

It is not an unprimeable number, because it can be changed into a prime (681271) 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, 11325 + ... + 11384.

It is an arithmetic number, because the mean of its divisors is an integer number (102195).

2⁶⁸¹²⁷⁰ is an apocalyptic number.

681270 is an abundant number, since it is smaller than the sum of its proper divisors (953850).

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

681270 is a wasteful number, since it uses less digits than its factorization.

681270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22719.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 681270 is about 825.3908165227. The cubic root of 681270 is about 87.9913042372.

The spelling of 681270 in words is "six hundred eighty-one thousand, two hundred seventy".