681259 has 2 divisors, whose sum is σ = 681260. Its totient is φ = 681258.

The previous prime is 681257. The next prime is 681271. The reversal of 681259 is 952186.

681259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681259 - 2¹ = 681257 is a prime.

It is a super-2 number, since 2×681259² = 928227650162, which contains 22 as substring.

Together with 681257, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 681259.

It is not a weakly prime, because it can be changed into another prime (681251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340629 + 340630.

It is an arithmetic number, because the mean of its divisors is an integer number (340630).

2⁶⁸¹²⁵⁹ is an apocalyptic number.

681259 is a deficient number, since it is larger than the sum of its proper divisors (1).

681259 is an equidigital number, since it uses as much as digits as its factorization.

681259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 681259 is about 825.3841529857. The cubic root of 681259 is about 87.9908306562.

The spelling of 681259 in words is "six hundred eighty-one thousand, two hundred fifty-nine".