745517369 has 2 divisors, whose sum is σ = 745517370. Its totient is φ = 745517368.

The previous prime is 745517363. The next prime is 745517389. The reversal of 745517369 is 963715547.

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., 656025769 + 89491600 = 25613^2 + 9460^2 .

It is an emirp because it is prime and its reverse (963715547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745517369 - 2¹² = 745513273 is a prime.

It is a super-2 number, since 2×745517369² = 1111592294961364322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (745517363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372758684 + 372758685.

It is an arithmetic number, because the mean of its divisors is an integer number (372758685).

Almost surely, 2^745517369 is an apocalyptic number.

It is an amenable number.

745517369 is a deficient number, since it is larger than the sum of its proper divisors (1).

745517369 is an equidigital number, since it uses as much as digits as its factorization.

745517369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 47.

The square root of 745517369 is about 27304.1639498447. The cubic root of 745517369 is about 906.7465712420.

The spelling of 745517369 in words is "seven hundred forty-five million, five hundred seventeen thousand, three hundred sixty-nine".