10000643 has 2 divisors, whose sum is σ = 10000644. Its totient is φ = 10000642.

The previous prime is 10000609. The next prime is 10000651. The reversal of 10000643 is 34600001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10000643 - 2²⁰ = 8952067 is a prime.

It is not a weakly prime, because it can be changed into another prime (10000943) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000321 + 5000322.

It is an arithmetic number, because the mean of its divisors is an integer number (5000322).

Almost surely, 2^10000643 is an apocalyptic number.

10000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000643 is an equidigital number, since it uses as much as digits as its factorization.

10000643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 10000643 is about 3162.3793257609. The cubic root of 10000643 is about 215.4480865759.

Adding to 10000643 its reverse (34600001), we get a palindrome (44600644).

The spelling of 10000643 in words is "ten million, six hundred forty-three", and thus it is an aban number.