681367 has 2 divisors, whose sum is σ = 681368. Its totient is φ = 681366.

The previous prime is 681361. The next prime is 681371. The reversal of 681367 is 763186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681367 - 2¹¹ = 679319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681361) 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 as a sum of consecutive naturals, namely, 340683 + 340684.

It is an arithmetic number, because the mean of its divisors is an integer number (340684).

2⁶⁸¹³⁶⁷ is an apocalyptic number.

681367 is a deficient number, since it is larger than the sum of its proper divisors (1).

681367 is an equidigital number, since it uses as much as digits as its factorization.

681367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 681367 is about 825.4495744744. The cubic root of 681367 is about 87.9954801398.

The spelling of 681367 in words is "six hundred eighty-one thousand, three hundred sixty-seven".