75243605 has 8 divisors (see below), whose sum is σ = 90363192. Its totient is φ = 60147648.

The previous prime is 75243587. The next prime is 75243611. The reversal of 75243605 is 50634257.

It can be written as a sum of positive squares in 4 ways, for example, as 26481316 + 48762289 = 5146^2 + 6983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75243605 - 2¹⁰ = 75242581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2087 + ... + 12443.

It is an arithmetic number, because the mean of its divisors is an integer number (11295399).

Almost surely, 2^75243605 is an apocalyptic number.

It is an amenable number.

75243605 is a deficient number, since it is larger than the sum of its proper divisors (15119587).

75243605 is a wasteful number, since it uses less digits than its factorization.

75243605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11815.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 75243605 is about 8674.3071769450. The cubic root of 75243605 is about 422.1724267863.

The spelling of 75243605 in words is "seventy-five million, two hundred forty-three thousand, six hundred five".