5643920 has 20 divisors (see below), whose sum is σ = 13122300. Its totient is φ = 2257536.

The previous prime is 5643919. The next prime is 5643923. The reversal of 5643920 is 293465.

It can be written as a sum of positive squares in 2 ways, for example, as 4194304 + 1449616 = 2048^2 + 1204^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (5643923) 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, 35195 + ... + 35354.

It is an arithmetic number, because the mean of its divisors is an integer number (656115).

Almost surely, 2^5643920 is an apocalyptic number.

It is an amenable number.

5643920 is an abundant number, since it is smaller than the sum of its proper divisors (7478380).

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

5643920 is a wasteful number, since it uses less digits than its factorization.

5643920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70562 (or 70556 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 5643920 is about 2375.6935829353. The cubic root of 5643920 is about 178.0438388845.

The spelling of 5643920 in words is "five million, six hundred forty-three thousand, nine hundred twenty".