74303321 has 2 divisors, whose sum is σ = 74303322. Its totient is φ = 74303320.

The previous prime is 74303303. The next prime is 74303347. The reversal of 74303321 is 12330347.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62980096 + 11323225 = 7936^2 + 3365^2 .

It is an emirp because it is prime and its reverse (12330347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74303321 - 2¹⁴ = 74286937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74303351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37151660 + 37151661.

It is an arithmetic number, because the mean of its divisors is an integer number (37151661).

Almost surely, 2^74303321 is an apocalyptic number.

It is an amenable number.

74303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

74303321 is an equidigital number, since it uses as much as digits as its factorization.

74303321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 74303321 is about 8619.9374127658. The cubic root of 74303321 is about 420.4064866615.

Adding to 74303321 its reverse (12330347), we get a palindrome (86633668).

The spelling of 74303321 in words is "seventy-four million, three hundred three thousand, three hundred twenty-one".