7164945565 has 4 divisors (see below), whose sum is σ = 8597934684. Its totient is φ = 5731956448.

The previous prime is 7164945551. The next prime is 7164945577. The reversal of 7164945565 is 5655494617.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5655494617 = 73 ⋅77472529.

It can be written as a sum of positive squares in 2 ways, for example, as 1647872836 + 5517072729 = 40594^2 + 74277^2 .

It is a cyclic number.

It is not a de Polignac number, because 7164945565 - 2¹¹ = 7164943517 is a prime.

It is a Duffinian number.

It is a congruent 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, 716494552 + ... + 716494561.

It is an arithmetic number, because the mean of its divisors is an integer number (2149483671).

Almost surely, 2^7164945565 is an apocalyptic number.

It is an amenable number.

7164945565 is a deficient number, since it is larger than the sum of its proper divisors (1432989119).

7164945565 is a wasteful number, since it uses less digits than its factorization.

7164945565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432989118.

The product of its digits is 4536000, while the sum is 52.

The square root of 7164945565 is about 84646.0014708315. The cubic root of 7164945565 is about 1927.8399025313.

The spelling of 7164945565 in words is "seven billion, one hundred sixty-four million, nine hundred forty-five thousand, five hundred sixty-five".