681341 has 2 divisors, whose sum is σ = 681342. Its totient is φ = 681340.

The previous prime is 681337. The next prime is 681361. The reversal of 681341 is 143186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 177241 = 710^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 681341 - 2² = 681337 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340670 + 340671.

It is an arithmetic number, because the mean of its divisors is an integer number (340671).

2⁶⁸¹³⁴¹ is an apocalyptic number.

It is an amenable number.

681341 is a deficient number, since it is larger than the sum of its proper divisors (1).

681341 is an equidigital number, since it uses as much as digits as its factorization.

681341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 681341 is about 825.4338253307. The cubic root of 681341 is about 87.9943608645.

It can be divided in two parts, 681 and 341, that multiplied together give a triangular number (232221 = T₆₈₁).

The spelling of 681341 in words is "six hundred eighty-one thousand, three hundred forty-one".