5644818 has 48 divisors (see below), whose sum is σ = 12796056. Its totient is φ = 1797120.

The previous prime is 5644813. The next prime is 5644829. The reversal of 5644818 is 8184465.

5644818 is a `hidden beast` number, since 5 + 644 + 8 + 1 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3814209 + 1830609 = 1953^2 + 1353^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5644813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58146 + ... + 58242.

Almost surely, 2^5644818 is an apocalyptic number.

5644818 is an abundant number, since it is smaller than the sum of its proper divisors (7151238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5644818 is a wasteful number, since it uses less digits than its factorization.

5644818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 216 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 5644818 is about 2375.8825728558. The cubic root of 5644818 is about 178.0532811922.

It can be divided in two parts, 56448 and 18, that multiplied together give a square (1016064 = 1008²).

The spelling of 5644818 in words is "five million, six hundred forty-four thousand, eight hundred eighteen".