5644645263 has 6 divisors (see below), whose sum is σ = 8153376504. Its totient is φ = 3763096836.

The previous prime is 5644645247. The next prime is 5644645283. The reversal of 5644645263 is 3625464465.

It is a happy number.

5644645263 is a `hidden beast` number, since 5 + 64 + 4 + 64 + 526 + 3 = 666.

It is not a de Polignac number, because 5644645263 - 2⁴ = 5644645247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644645283) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 313591395 + ... + 313591412.

It is an arithmetic number, because the mean of its divisors is an integer number (1358896084).

Almost surely, 2^5644645263 is an apocalyptic number.

5644645263 is a deficient number, since it is larger than the sum of its proper divisors (2508731241).

5644645263 is a wasteful number, since it uses less digits than its factorization.

5644645263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627182813 (or 627182810 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The square root of 5644645263 is about 75130.8542677374. The cubic root of 5644645263 is about 1780.5146497168.

The spelling of 5644645263 in words is "five billion, six hundred forty-four million, six hundred forty-five thousand, two hundred sixty-three".