34000643 has 2 divisors, whose sum is σ = 34000644. Its totient is φ = 34000642.

The previous prime is 34000639. The next prime is 34000649. The reversal of 34000643 is 34600043.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34000643 - 2² = 34000639 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (34000649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17000321 + 17000322.

It is an arithmetic number, because the mean of its divisors is an integer number (17000322).

Almost surely, 2^34000643 is an apocalyptic number.

34000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

34000643 is an equidigital number, since it uses as much as digits as its factorization.

34000643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 34000643 is about 5831.0070313797. The cubic root of 34000643 is about 323.9632223407.

Adding to 34000643 its reverse (34600043), we get a palindrome (68600686).

It can be divided in two parts, 34000 and 643, that added together give a palindrome (34643).

The spelling of 34000643 in words is "thirty-four million, six hundred forty-three", and thus it is an aban number.