75740321 has 8 divisors (see below), whose sum is σ = 80277120. Its totient is φ = 71212608.

The previous prime is 75740309. The next prime is 75740323. The reversal of 75740321 is 12304757.

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 75740321 - 2¹⁴ = 75723937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75740323) 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 in 7 ways as a sum of consecutive naturals, for example, 23060 + ... + 26138.

It is an arithmetic number, because the mean of its divisors is an integer number (10034640).

Almost surely, 2^75740321 is an apocalyptic number.

It is an amenable number.

75740321 is a deficient number, since it is larger than the sum of its proper divisors (4536799).

75740321 is a wasteful number, since it uses less digits than its factorization.

75740321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 75740321 is about 8702.8915309798. The cubic root of 75740321 is about 423.0993717582.

The spelling of 75740321 in words is "seventy-five million, seven hundred forty thousand, three hundred twenty-one".