75028643 has 2 divisors, whose sum is σ = 75028644. Its totient is φ = 75028642.

The previous prime is 75028631. The next prime is 75028661. The reversal of 75028643 is 34682057.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75028643 - 2¹⁸ = 74766499 is a prime.

It is not a weakly prime, because it can be changed into another prime (75028693) 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, 37514321 + 37514322.

It is an arithmetic number, because the mean of its divisors is an integer number (37514322).

Almost surely, 2^75028643 is an apocalyptic number.

75028643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75028643 is an equidigital number, since it uses as much as digits as its factorization.

75028643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 75028643 is about 8661.9075843604. The cubic root of 75028643 is about 421.7700112443.

The spelling of 75028643 in words is "seventy-five million, twenty-eight thousand, six hundred forty-three".