830697643 has 2 divisors, whose sum is σ = 830697644. Its totient is φ = 830697642.

The previous prime is 830697631. The next prime is 830697649. The reversal of 830697643 is 346796038.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 830697643 - 2¹⁷ = 830566571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 830697593 and 830697602.

It is not a weakly prime, because it can be changed into another prime (830697649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415348821 + 415348822.

It is an arithmetic number, because the mean of its divisors is an integer number (415348822).

Almost surely, 2^830697643 is an apocalyptic number.

830697643 is a deficient number, since it is larger than the sum of its proper divisors (1).

830697643 is an equidigital number, since it uses as much as digits as its factorization.

830697643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 830697643 is about 28821.8258096187. The cubic root of 830697643 is about 940.0428692536.

The spelling of 830697643 in words is "eight hundred thirty million, six hundred ninety-seven thousand, six hundred forty-three".