5645637297 has 6 divisors (see below), whose sum is σ = 8154809442. Its totient is φ = 3763758192.

The previous prime is 5645637271. The next prime is 5645637317. The reversal of 5645637297 is 7927365465.

5645637297 is a `hidden beast` number, since 5 + 6 + 4 + 563 + 72 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4626176256 + 1019461041 = 68016^2 + 31929^2 .

It is not a de Polignac number, because 5645637297 - 2²⁰ = 5644588721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5645637197) 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 5 ways as a sum of consecutive naturals, for example, 313646508 + ... + 313646525.

It is an arithmetic number, because the mean of its divisors is an integer number (1359134907).

Almost surely, 2^5645637297 is an apocalyptic number.

It is an amenable number.

5645637297 is a deficient number, since it is larger than the sum of its proper divisors (2509172145).

5645637297 is a wasteful number, since it uses less digits than its factorization.

5645637297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627293039 (or 627293036 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The square root of 5645637297 is about 75137.4560189524. The cubic root of 5645637297 is about 1780.6189507857.

The spelling of 5645637297 in words is "five billion, six hundred forty-five million, six hundred thirty-seven thousand, two hundred ninety-seven".