74404321 has 2 divisors, whose sum is σ = 74404322. Its totient is φ = 74404320.

The previous prime is 74404279. The next prime is 74404349. The reversal of 74404321 is 12340447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 21986721 = 7240^2 + 4689^2 .

It is a cyclic number.

It is not a de Polignac number, because 74404321 - 2⁹ = 74403809 is a prime.

It is not a weakly prime, because it can be changed into another prime (74404621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37202160 + 37202161.

It is an arithmetic number, because the mean of its divisors is an integer number (37202161).

Almost surely, 2^74404321 is an apocalyptic number.

It is an amenable number.

74404321 is a deficient number, since it is larger than the sum of its proper divisors (1).

74404321 is an equidigital number, since it uses as much as digits as its factorization.

74404321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 74404321 is about 8625.7939344735. The cubic root of 74404321 is about 420.5968856463.

Adding to 74404321 its reverse (12340447), we get a palindrome (86744768).

The spelling of 74404321 in words is "seventy-four million, four hundred four thousand, three hundred twenty-one".