910000643 has 2 divisors, whose sum is σ = 910000644. Its totient is φ = 910000642.

The previous prime is 910000549. The next prime is 910000661. The reversal of 910000643 is 346000019.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 910000643 - 2²⁶ = 842891779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (910000843) 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, 455000321 + 455000322.

It is an arithmetic number, because the mean of its divisors is an integer number (455000322).

Almost surely, 2^910000643 is an apocalyptic number.

910000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

910000643 is an equidigital number, since it uses as much as digits as its factorization.

910000643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 910000643 is about 30166.2169156161. The cubic root of 910000643 is about 969.0523365852.

The spelling of 910000643 in words is "nine hundred ten million, six hundred forty-three", and thus it is an aban number.