830826643 has 2 divisors, whose sum is σ = 830826644. Its totient is φ = 830826642.

The previous prime is 830826641. The next prime is 830826671. The reversal of 830826643 is 346628038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 830826643 - 2¹ = 830826641 is a prime.

Together with 830826641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 830826596 and 830826605.

It is not a weakly prime, because it can be changed into another prime (830826641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415413321 + 415413322.

It is an arithmetic number, because the mean of its divisors is an integer number (415413322).

Almost surely, 2^830826643 is an apocalyptic number.

830826643 is a deficient number, since it is larger than the sum of its proper divisors (1).

830826643 is an equidigital number, since it uses as much as digits as its factorization.

830826643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 830826643 is about 28824.0636101158. The cubic root of 830826643 is about 940.0915268506.

The spelling of 830826643 in words is "eight hundred thirty million, eight hundred twenty-six thousand, six hundred forty-three".