859680823 has 2 divisors, whose sum is σ = 859680824. Its totient is φ = 859680822.

The previous prime is 859680793. The next prime is 859680827. The reversal of 859680823 is 328086958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 859680823 - 2¹³ = 859672631 is a prime.

It is a super-2 number, since 2×859680823² = 1478102234867914658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859680827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429840411 + 429840412.

It is an arithmetic number, because the mean of its divisors is an integer number (429840412).

Almost surely, 2^859680823 is an apocalyptic number.

859680823 is a deficient number, since it is larger than the sum of its proper divisors (1).

859680823 is an equidigital number, since it uses as much as digits as its factorization.

859680823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 859680823 is about 29320.3141695310. The cubic root of 859680823 is about 950.8508805136.

The spelling of 859680823 in words is "eight hundred fifty-nine million, six hundred eighty thousand, eight hundred twenty-three".