1030643 has 2 divisors, whose sum is σ = 1030644. Its totient is φ = 1030642.

The previous prime is 1030639. The next prime is 1030681. The reversal of 1030643 is 3460301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1030643 - 2² = 1030639 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1030543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515321 + 515322.

It is an arithmetic number, because the mean of its divisors is an integer number (515322).

2^1030643 is an apocalyptic number.

1030643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030643 is an equidigital number, since it uses as much as digits as its factorization.

1030643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1030643 is about 1015.2058904478. The cubic root of 1030643 is about 101.0111741387.

Adding to 1030643 its reverse (3460301), we get a palindrome (4490944).

The spelling of 1030643 in words is "one million, thirty thousand, six hundred forty-three".