5645220 has 48 divisors (see below), whose sum is σ = 18066048. Its totient is φ = 1290240.

The previous prime is 5645203. The next prime is 5645239. The reversal of 5645220 is 225465.

5645220 = T₁₅₅ + T₁₅₆ + ... + T₃₃₄.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6301 + ... + 7140.

It is an arithmetic number, because the mean of its divisors is an integer number (376376).

Almost surely, 2^5645220 is an apocalyptic number.

It is an amenable number.

5645220 is an abundant number, since it is smaller than the sum of its proper divisors (12420828).

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

5645220 is a wasteful number, since it uses less digits than its factorization.

5645220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460 (or 13458 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 5645220 is about 2375.9671714904. The cubic root of 5645220 is about 178.0575078251.

The spelling of 5645220 in words is "five million, six hundred forty-five thousand, two hundred twenty".