74397313 has 2 divisors, whose sum is σ = 74397314. Its totient is φ = 74397312.

The previous prime is 74397311. The next prime is 74397317. The reversal of 74397313 is 31379347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 32626944 = 6463^2 + 5712^2 .

It is a cyclic number.

It is not a de Polignac number, because 74397313 - 2¹ = 74397311 is a prime.

Together with 74397311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74397311) 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, 37198656 + 37198657.

It is an arithmetic number, because the mean of its divisors is an integer number (37198657).

Almost surely, 2^74397313 is an apocalyptic number.

It is an amenable number.

74397313 is a deficient number, since it is larger than the sum of its proper divisors (1).

74397313 is an equidigital number, since it uses as much as digits as its factorization.

74397313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 37.

The square root of 74397313 is about 8625.3877014312. The cubic root of 74397313 is about 420.5836801609.

The spelling of 74397313 in words is "seventy-four million, three hundred ninety-seven thousand, three hundred thirteen".