745485817 has 2 divisors, whose sum is σ = 745485818. Its totient is φ = 745485816.

The previous prime is 745485781. The next prime is 745485823. The reversal of 745485817 is 718584547.

Together with previous prime (745485781) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394260736 + 351225081 = 19856^2 + 18741^2 .

It is a cyclic number.

It is not a de Polignac number, because 745485817 - 2²³ = 737097209 is a prime.

It is not a weakly prime, because it can be changed into another prime (745485877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372742908 + 372742909.

It is an arithmetic number, because the mean of its divisors is an integer number (372742909).

Almost surely, 2^745485817 is an apocalyptic number.

It is an amenable number.

745485817 is a deficient number, since it is larger than the sum of its proper divisors (1).

745485817 is an equidigital number, since it uses as much as digits as its factorization.

745485817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1254400, while the sum is 49.

The square root of 745485817 is about 27303.5861564008. The cubic root of 745485817 is about 906.7337791987.

The spelling of 745485817 in words is "seven hundred forty-five million, four hundred eighty-five thousand, eight hundred seventeen".