34020643 has 2 divisors, whose sum is σ = 34020644. Its totient is φ = 34020642.

The previous prime is 34020629. The next prime is 34020661. The reversal of 34020643 is 34602043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34020643 - 2²¹ = 31923491 is a prime.

It is not a weakly prime, because it can be changed into another prime (34020673) 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, 17010321 + 17010322.

It is an arithmetic number, because the mean of its divisors is an integer number (17010322).

Almost surely, 2^34020643 is an apocalyptic number.

34020643 is a deficient number, since it is larger than the sum of its proper divisors (1).

34020643 is an equidigital number, since it uses as much as digits as its factorization.

34020643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 34020643 is about 5832.7217488922. The cubic root of 34020643 is about 324.0267308891.

Adding to 34020643 its reverse (34602043), we get a palindrome (68622686).

The spelling of 34020643 in words is "thirty-four million, twenty thousand, six hundred forty-three".