5644318 has 4 divisors (see below), whose sum is σ = 8466480. Its totient is φ = 2822158.

The previous prime is 5644283. The next prime is 5644319. The reversal of 5644318 is 8134465.

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: 8134465 = 5 ⋅1626893.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 5644318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1411078 + ... + 1411081.

It is an arithmetic number, because the mean of its divisors is an integer number (2116620).

Almost surely, 2^5644318 is an apocalyptic number.

5644318 is a deficient number, since it is larger than the sum of its proper divisors (2822162).

5644318 is a wasteful number, since it uses less digits than its factorization.

5644318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822161.

The product of its digits is 11520, while the sum is 31.

The square root of 5644318 is about 2375.7773464700. Note that the first 3 decimals coincide. The cubic root of 5644318 is about 178.0480239062.

The spelling of 5644318 in words is "five million, six hundred forty-four thousand, three hundred eighteen".