74445313 has 2 divisors, whose sum is σ = 74445314. Its totient is φ = 74445312.

The previous prime is 74445289. The next prime is 74445347. The reversal of 74445313 is 31354447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 19210689 = 7432^2 + 4383^2 .

It is a cyclic number.

It is not a de Polignac number, because 74445313 - 2⁵ = 74445281 is a prime.

It is not a weakly prime, because it can be changed into another prime (74445013) 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 as a sum of consecutive naturals, namely, 37222656 + 37222657.

It is an arithmetic number, because the mean of its divisors is an integer number (37222657).

Almost surely, 2^74445313 is an apocalyptic number.

It is an amenable number.

74445313 is a deficient number, since it is larger than the sum of its proper divisors (1).

74445313 is an equidigital number, since it uses as much as digits as its factorization.

74445313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 74445313 is about 8628.1697363925. The cubic root of 74445313 is about 420.6741120853.

The spelling of 74445313 in words is "seventy-four million, four hundred forty-five thousand, three hundred thirteen".