744509065 has 4 divisors (see below), whose sum is σ = 893410884. Its totient is φ = 595607248.

The previous prime is 744509041. The next prime is 744509071. The reversal of 744509065 is 560905447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560905447 = 22717 ⋅24691.

It can be written as a sum of positive squares in 2 ways, for example, as 88585744 + 655923321 = 9412^2 + 25611^2 .

It is a cyclic number.

It is not a de Polignac number, because 744509065 - 2⁷ = 744508937 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74450902 + ... + 74450911.

It is an arithmetic number, because the mean of its divisors is an integer number (223352721).

Almost surely, 2^744509065 is an apocalyptic number.

It is an amenable number.

744509065 is a deficient number, since it is larger than the sum of its proper divisors (148901819).

744509065 is a wasteful number, since it uses less digits than its factorization.

744509065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148901818.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 744509065 is about 27285.6934124827. The cubic root of 744509065 is about 906.3375985716.

The spelling of 744509065 in words is "seven hundred forty-four million, five hundred nine thousand, sixty-five".