745596605 has 16 divisors (see below), whose sum is σ = 964916400. Its totient is φ = 549808128.

The previous prime is 745596571. The next prime is 745596619. The reversal of 745596605 is 506695547.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12432676 + 733163929 = 3526^2 + 27077^2 .

It is a cyclic number.

It is not a de Polignac number, because 745596605 - 2²⁰ = 744548029 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 745596605.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 39821 + ... + 55469.

It is an arithmetic number, because the mean of its divisors is an integer number (60307275).

Almost surely, 2^745596605 is an apocalyptic number.

It is an amenable number.

745596605 is a deficient number, since it is larger than the sum of its proper divisors (219319795).

745596605 is a wasteful number, since it uses less digits than its factorization.

745596605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16400.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 745596605 is about 27305.6148987713. The cubic root of 745596605 is about 906.7786940912.

The spelling of 745596605 in words is "seven hundred forty-five million, five hundred ninety-six thousand, six hundred five".