5640220 has 12 divisors (see below), whose sum is σ = 11844504. Its totient is φ = 2256080.

The previous prime is 5640211. The next prime is 5640251. The reversal of 5640220 is 220465.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140986 + ... + 141025.

It is an arithmetic number, because the mean of its divisors is an integer number (987042).

Almost surely, 2^5640220 is an apocalyptic number.

It is an amenable number.

5640220 is an abundant number, since it is smaller than the sum of its proper divisors (6204284).

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

5640220 is a wasteful number, since it uses less digits than its factorization.

5640220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282020 (or 282018 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 5640220 is about 2374.9147353116. The cubic root of 5640220 is about 178.0049234846.

Adding to 5640220 its reverse (220465), we get a palindrome (5860685).

The spelling of 5640220 in words is "five million, six hundred forty thousand, two hundred twenty".