75045673 has 4 divisors (see below), whose sum is σ = 75709908. Its totient is φ = 74381440.

The previous prime is 75045661. The next prime is 75045709. The reversal of 75045673 is 37654057.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35141184 + 39904489 = 5928^2 + 6317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75045673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75045613) 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, 331948 + ... + 332173.

It is an arithmetic number, because the mean of its divisors is an integer number (18927477).

Almost surely, 2^75045673 is an apocalyptic number.

It is an amenable number.

75045673 is a deficient number, since it is larger than the sum of its proper divisors (664235).

75045673 is a wasteful number, since it uses less digits than its factorization.

75045673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664234.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 75045673 is about 8662.8905683957. The cubic root of 75045673 is about 421.8019199467.

The spelling of 75045673 in words is "seventy-five million, forty-five thousand, six hundred seventy-three".