745817227 has 4 divisors (see below), whose sum is σ = 745930816. Its totient is φ = 745703640.

The previous prime is 745817209. The next prime is 745817239. The reversal of 745817227 is 722718547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722718547 = 53 ⋅13636199.

It is a cyclic number.

It is not a de Polignac number, because 745817227 - 2²³ = 737428619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745817257) 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 in 3 ways as a sum of consecutive naturals, for example, 46299 + ... + 60292.

It is an arithmetic number, because the mean of its divisors is an integer number (186482704).

Almost surely, 2^745817227 is an apocalyptic number.

745817227 is a deficient number, since it is larger than the sum of its proper divisors (113589).

745817227 is a wasteful number, since it uses less digits than its factorization.

745817227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113588.

The product of its digits is 219520, while the sum is 43.

The square root of 745817227 is about 27309.6544650422. The cubic root of 745817227 is about 906.8681238619.

The spelling of 745817227 in words is "seven hundred forty-five million, eight hundred seventeen thousand, two hundred twenty-seven".