5646644 has 12 divisors (see below), whose sum is σ = 10148964. Its totient is φ = 2746944.

The previous prime is 5646637. The next prime is 5646647. The reversal of 5646644 is 4466465.

It can be written as a sum of positive squares in 2 ways, for example, as 4622500 + 1024144 = 2150^2 + 1012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5646647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18929 + ... + 19224.

It is an arithmetic number, because the mean of its divisors is an integer number (845747).

Almost surely, 2^5646644 is an apocalyptic number.

It is an amenable number.

5646644 is a deficient number, since it is larger than the sum of its proper divisors (4502320).

5646644 is a wasteful number, since it uses less digits than its factorization.

5646644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38194 (or 38192 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 5646644 is about 2376.2668200352. The cubic root of 5646644 is about 178.0724781643.

The spelling of 5646644 in words is "five million, six hundred forty-six thousand, six hundred forty-four".