830817643 has 2 divisors, whose sum is σ = 830817644. Its totient is φ = 830817642.

The previous prime is 830817629. The next prime is 830817679. The reversal of 830817643 is 346718038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 830817643 - 2⁹ = 830817131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 830817596 and 830817605.

It is not a weakly prime, because it can be changed into another prime (830814643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415408821 + 415408822.

It is an arithmetic number, because the mean of its divisors is an integer number (415408822).

Almost surely, 2^830817643 is an apocalyptic number.

830817643 is a deficient number, since it is larger than the sum of its proper divisors (1).

830817643 is an equidigital number, since it uses as much as digits as its factorization.

830817643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 830817643 is about 28823.9074901374. The cubic root of 830817643 is about 940.0881322980.

The spelling of 830817643 in words is "eight hundred thirty million, eight hundred seventeen thousand, six hundred forty-three".