679843 has 2 divisors, whose sum is σ = 679844. Its totient is φ = 679842.

The previous prime is 679837. The next prime is 679859. The reversal of 679843 is 348976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679843 - 2¹³ = 671651 is a prime.

It is not a weakly prime, because it can be changed into another prime (679823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339921 + 339922.

It is an arithmetic number, because the mean of its divisors is an integer number (339922).

2⁶⁷⁹⁸⁴³ is an apocalyptic number.

679843 is a deficient number, since it is larger than the sum of its proper divisors (1).

679843 is an equidigital number, since it uses as much as digits as its factorization.

679843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 679843 is about 824.5259243953. The cubic root of 679843 is about 87.9298252531.

The spelling of 679843 in words is "six hundred seventy-nine thousand, eight hundred forty-three".