75064643 has 4 divisors (see below), whose sum is σ = 75082008. Its totient is φ = 75047280.

The previous prime is 75064637. The next prime is 75064669. The reversal of 75064643 is 34646057.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 75064643 - 2²⁰ = 74016067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75064543) 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 in 3 ways as a sum of consecutive naturals, for example, 3503 + ... + 12743.

It is an arithmetic number, because the mean of its divisors is an integer number (18770502).

Almost surely, 2^75064643 is an apocalyptic number.

75064643 is a deficient number, since it is larger than the sum of its proper divisors (17365).

75064643 is an equidigital number, since it uses as much as digits as its factorization.

75064643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17364.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 75064643 is about 8663.9853993413. The cubic root of 75064643 is about 421.8374578975.

The spelling of 75064643 in words is "seventy-five million, sixty-four thousand, six hundred forty-three".